diff --git a/3.12-rc/alpine3.15/Dockerfile b/3.12-rc/alpine3.15/Dockerfile
new file mode 100644
index 000000000..97d156356
--- /dev/null
+++ b/3.12-rc/alpine3.15/Dockerfile
@@ -0,0 +1,146 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.15
+
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
+
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
+# runtime dependencies
+RUN set -eux; \
+	apk add --no-cache \
+		ca-certificates \
+		tzdata \
+	;
+
+ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
+ENV PYTHON_VERSION 3.12.0a1
+
+RUN set -eux; \
+	\
+	apk add --no-cache --virtual .build-deps \
+		gnupg \
+		tar \
+		xz \
+		\
+		bluez-dev \
+		bzip2-dev \
+		dpkg-dev dpkg \
+		expat-dev \
+		findutils \
+		gcc \
+		gdbm-dev \
+		libc-dev \
+		libffi-dev \
+		libnsl-dev \
+		libtirpc-dev \
+		linux-headers \
+		make \
+		ncurses-dev \
+		openssl-dev \
+		pax-utils \
+		readline-dev \
+		sqlite-dev \
+		tcl-dev \
+		tk \
+		tk-dev \
+		util-linux-dev \
+		xz-dev \
+		zlib-dev \
+	; \
+	\
+	wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz"; \
+	wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc"; \
+	GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys "$GPG_KEY"; \
+	gpg --batch --verify python.tar.xz.asc python.tar.xz; \
+	command -v gpgconf > /dev/null && gpgconf --kill all || :; \
+	rm -rf "$GNUPGHOME" python.tar.xz.asc; \
+	mkdir -p /usr/src/python; \
+	tar --extract --directory /usr/src/python --strip-components=1 --file python.tar.xz; \
+	rm python.tar.xz; \
+	\
+	cd /usr/src/python; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+	./configure \
+		--build="$gnuArch" \
+		--enable-loadable-sqlite-extensions \
+		--enable-optimizations \
+		--enable-option-checking=fatal \
+		--enable-shared \
+		--with-lto \
+		--with-system-expat \
+		--without-ensurepip \
+	; \
+	nproc="$(nproc)"; \
+	make -j "$nproc" \
+# set thread stack size to 1MB so we don't segfault before we hit sys.getrecursionlimit()
+# https://github.com/alpinelinux/aports/commit/2026e1259422d4e0cf92391ca2d3844356c649d0
+		EXTRA_CFLAGS="-DTHREAD_STACK_SIZE=0x100000" \
+		LDFLAGS="-Wl,--strip-all" \
+	; \
+	make install; \
+	\
+	cd /; \
+	rm -rf /usr/src/python; \
+	\
+	find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+		\) -exec rm -rf '{}' + \
+	; \
+	\
+	find /usr/local -type f -executable -not \( -name '*tkinter*' \) -exec scanelf --needed --nobanner --format '%n#p' '{}' ';' \
+		| tr ',' '\n' \
+		| sort -u \
+		| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+		| xargs -rt apk add --no-network --virtual .python-rundeps \
+	; \
+	apk del --no-network .build-deps; \
+	\
+	python3 --version
+
+# make some useful symlinks that are expected to exist ("/usr/local/bin/python" and friends)
+RUN set -eux; \
+	for src in idle3 pydoc3 python3 python3-config; do \
+		dst="$(echo "$src" | tr -d 3)"; \
+		[ -s "/usr/local/bin/$src" ]; \
+		[ ! -e "/usr/local/bin/$dst" ]; \
+		ln -svT "$src" "/usr/local/bin/$dst"; \
+	done
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.3
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 65.5.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67
+
+RUN set -eux; \
+	\
+	wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+	echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+	\
+	export PYTHONDONTWRITEBYTECODE=1; \
+	\
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		--no-compile \
+		"pip==$PYTHON_PIP_VERSION" \
+		"setuptools==$PYTHON_SETUPTOOLS_VERSION" \
+	; \
+	rm -f get-pip.py; \
+	\
+	pip --version
+
+CMD ["python3"]
diff --git a/3.12-rc/alpine3.16/Dockerfile b/3.12-rc/alpine3.16/Dockerfile
new file mode 100644
index 000000000..8642be1c6
--- /dev/null
+++ b/3.12-rc/alpine3.16/Dockerfile
@@ -0,0 +1,146 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.16
+
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
+
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
+# runtime dependencies
+RUN set -eux; \
+	apk add --no-cache \
+		ca-certificates \
+		tzdata \
+	;
+
+ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
+ENV PYTHON_VERSION 3.12.0a1
+
+RUN set -eux; \
+	\
+	apk add --no-cache --virtual .build-deps \
+		gnupg \
+		tar \
+		xz \
+		\
+		bluez-dev \
+		bzip2-dev \
+		dpkg-dev dpkg \
+		expat-dev \
+		findutils \
+		gcc \
+		gdbm-dev \
+		libc-dev \
+		libffi-dev \
+		libnsl-dev \
+		libtirpc-dev \
+		linux-headers \
+		make \
+		ncurses-dev \
+		openssl-dev \
+		pax-utils \
+		readline-dev \
+		sqlite-dev \
+		tcl-dev \
+		tk \
+		tk-dev \
+		util-linux-dev \
+		xz-dev \
+		zlib-dev \
+	; \
+	\
+	wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz"; \
+	wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc"; \
+	GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys "$GPG_KEY"; \
+	gpg --batch --verify python.tar.xz.asc python.tar.xz; \
+	command -v gpgconf > /dev/null && gpgconf --kill all || :; \
+	rm -rf "$GNUPGHOME" python.tar.xz.asc; \
+	mkdir -p /usr/src/python; \
+	tar --extract --directory /usr/src/python --strip-components=1 --file python.tar.xz; \
+	rm python.tar.xz; \
+	\
+	cd /usr/src/python; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+	./configure \
+		--build="$gnuArch" \
+		--enable-loadable-sqlite-extensions \
+		--enable-optimizations \
+		--enable-option-checking=fatal \
+		--enable-shared \
+		--with-lto \
+		--with-system-expat \
+		--without-ensurepip \
+	; \
+	nproc="$(nproc)"; \
+	make -j "$nproc" \
+# set thread stack size to 1MB so we don't segfault before we hit sys.getrecursionlimit()
+# https://github.com/alpinelinux/aports/commit/2026e1259422d4e0cf92391ca2d3844356c649d0
+		EXTRA_CFLAGS="-DTHREAD_STACK_SIZE=0x100000" \
+		LDFLAGS="-Wl,--strip-all" \
+	; \
+	make install; \
+	\
+	cd /; \
+	rm -rf /usr/src/python; \
+	\
+	find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+		\) -exec rm -rf '{}' + \
+	; \
+	\
+	find /usr/local -type f -executable -not \( -name '*tkinter*' \) -exec scanelf --needed --nobanner --format '%n#p' '{}' ';' \
+		| tr ',' '\n' \
+		| sort -u \
+		| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+		| xargs -rt apk add --no-network --virtual .python-rundeps \
+	; \
+	apk del --no-network .build-deps; \
+	\
+	python3 --version
+
+# make some useful symlinks that are expected to exist ("/usr/local/bin/python" and friends)
+RUN set -eux; \
+	for src in idle3 pydoc3 python3 python3-config; do \
+		dst="$(echo "$src" | tr -d 3)"; \
+		[ -s "/usr/local/bin/$src" ]; \
+		[ ! -e "/usr/local/bin/$dst" ]; \
+		ln -svT "$src" "/usr/local/bin/$dst"; \
+	done
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.3
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 65.5.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67
+
+RUN set -eux; \
+	\
+	wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+	echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+	\
+	export PYTHONDONTWRITEBYTECODE=1; \
+	\
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		--no-compile \
+		"pip==$PYTHON_PIP_VERSION" \
+		"setuptools==$PYTHON_SETUPTOOLS_VERSION" \
+	; \
+	rm -f get-pip.py; \
+	\
+	pip --version
+
+CMD ["python3"]
diff --git a/3.12-rc/bullseye/Dockerfile b/3.12-rc/bullseye/Dockerfile
new file mode 100644
index 000000000..7d339d503
--- /dev/null
+++ b/3.12-rc/bullseye/Dockerfile
@@ -0,0 +1,114 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM buildpack-deps:bullseye
+
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
+
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
+# runtime dependencies
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		libbluetooth-dev \
+		tk-dev \
+		uuid-dev \
+	; \
+	rm -rf /var/lib/apt/lists/*
+
+ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
+ENV PYTHON_VERSION 3.12.0a1
+
+RUN set -eux; \
+	\
+	wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz"; \
+	wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc"; \
+	GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys "$GPG_KEY"; \
+	gpg --batch --verify python.tar.xz.asc python.tar.xz; \
+	command -v gpgconf > /dev/null && gpgconf --kill all || :; \
+	rm -rf "$GNUPGHOME" python.tar.xz.asc; \
+	mkdir -p /usr/src/python; \
+	tar --extract --directory /usr/src/python --strip-components=1 --file python.tar.xz; \
+	rm python.tar.xz; \
+	\
+	cd /usr/src/python; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+	./configure \
+		--build="$gnuArch" \
+		--enable-loadable-sqlite-extensions \
+		--enable-optimizations \
+		--enable-option-checking=fatal \
+		--enable-shared \
+		--with-lto \
+		--with-system-expat \
+		--without-ensurepip \
+	; \
+	nproc="$(nproc)"; \
+	make -j "$nproc" \
+	; \
+	make install; \
+	\
+# enable GDB to load debugging data: https://github.com/docker-library/python/pull/701
+	bin="$(readlink -ve /usr/local/bin/python3)"; \
+	dir="$(dirname "$bin")"; \
+	mkdir -p "/usr/share/gdb/auto-load/$dir"; \
+	cp -vL Tools/gdb/libpython.py "/usr/share/gdb/auto-load/$bin-gdb.py"; \
+	\
+	cd /; \
+	rm -rf /usr/src/python; \
+	\
+	find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+		\) -exec rm -rf '{}' + \
+	; \
+	\
+	ldconfig; \
+	\
+	python3 --version
+
+# make some useful symlinks that are expected to exist ("/usr/local/bin/python" and friends)
+RUN set -eux; \
+	for src in idle3 pydoc3 python3 python3-config; do \
+		dst="$(echo "$src" | tr -d 3)"; \
+		[ -s "/usr/local/bin/$src" ]; \
+		[ ! -e "/usr/local/bin/$dst" ]; \
+		ln -svT "$src" "/usr/local/bin/$dst"; \
+	done
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.3
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 65.5.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67
+
+RUN set -eux; \
+	\
+	wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+	echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+	\
+	export PYTHONDONTWRITEBYTECODE=1; \
+	\
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		--no-compile \
+		"pip==$PYTHON_PIP_VERSION" \
+		"setuptools==$PYTHON_SETUPTOOLS_VERSION" \
+	; \
+	rm -f get-pip.py; \
+	\
+	pip --version
+
+CMD ["python3"]
diff --git a/3.12-rc/buster/Dockerfile b/3.12-rc/buster/Dockerfile
new file mode 100644
index 000000000..5a8983222
--- /dev/null
+++ b/3.12-rc/buster/Dockerfile
@@ -0,0 +1,114 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM buildpack-deps:buster
+
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
+
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
+# runtime dependencies
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		libbluetooth-dev \
+		tk-dev \
+		uuid-dev \
+	; \
+	rm -rf /var/lib/apt/lists/*
+
+ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
+ENV PYTHON_VERSION 3.12.0a1
+
+RUN set -eux; \
+	\
+	wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz"; \
+	wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc"; \
+	GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys "$GPG_KEY"; \
+	gpg --batch --verify python.tar.xz.asc python.tar.xz; \
+	command -v gpgconf > /dev/null && gpgconf --kill all || :; \
+	rm -rf "$GNUPGHOME" python.tar.xz.asc; \
+	mkdir -p /usr/src/python; \
+	tar --extract --directory /usr/src/python --strip-components=1 --file python.tar.xz; \
+	rm python.tar.xz; \
+	\
+	cd /usr/src/python; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+	./configure \
+		--build="$gnuArch" \
+		--enable-loadable-sqlite-extensions \
+		--enable-optimizations \
+		--enable-option-checking=fatal \
+		--enable-shared \
+		--with-lto \
+		--with-system-expat \
+		--without-ensurepip \
+	; \
+	nproc="$(nproc)"; \
+	make -j "$nproc" \
+	; \
+	make install; \
+	\
+# enable GDB to load debugging data: https://github.com/docker-library/python/pull/701
+	bin="$(readlink -ve /usr/local/bin/python3)"; \
+	dir="$(dirname "$bin")"; \
+	mkdir -p "/usr/share/gdb/auto-load/$dir"; \
+	cp -vL Tools/gdb/libpython.py "/usr/share/gdb/auto-load/$bin-gdb.py"; \
+	\
+	cd /; \
+	rm -rf /usr/src/python; \
+	\
+	find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+		\) -exec rm -rf '{}' + \
+	; \
+	\
+	ldconfig; \
+	\
+	python3 --version
+
+# make some useful symlinks that are expected to exist ("/usr/local/bin/python" and friends)
+RUN set -eux; \
+	for src in idle3 pydoc3 python3 python3-config; do \
+		dst="$(echo "$src" | tr -d 3)"; \
+		[ -s "/usr/local/bin/$src" ]; \
+		[ ! -e "/usr/local/bin/$dst" ]; \
+		ln -svT "$src" "/usr/local/bin/$dst"; \
+	done
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.3
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 65.5.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67
+
+RUN set -eux; \
+	\
+	wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+	echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+	\
+	export PYTHONDONTWRITEBYTECODE=1; \
+	\
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		--no-compile \
+		"pip==$PYTHON_PIP_VERSION" \
+		"setuptools==$PYTHON_SETUPTOOLS_VERSION" \
+	; \
+	rm -f get-pip.py; \
+	\
+	pip --version
+
+CMD ["python3"]
diff --git a/3.12-rc/slim-bullseye/Dockerfile b/3.12-rc/slim-bullseye/Dockerfile
new file mode 100644
index 000000000..20b5e1f13
--- /dev/null
+++ b/3.12-rc/slim-bullseye/Dockerfile
@@ -0,0 +1,156 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM debian:bullseye-slim
+
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
+
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
+# runtime dependencies
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		ca-certificates \
+		netbase \
+		tzdata \
+	; \
+	rm -rf /var/lib/apt/lists/*
+
+ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
+ENV PYTHON_VERSION 3.12.0a1
+
+RUN set -eux; \
+	\
+	savedAptMark="$(apt-mark showmanual)"; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		dpkg-dev \
+		gcc \
+		gnupg dirmngr \
+		libbluetooth-dev \
+		libbz2-dev \
+		libc6-dev \
+		libexpat1-dev \
+		libffi-dev \
+		libgdbm-dev \
+		liblzma-dev \
+		libncursesw5-dev \
+		libreadline-dev \
+		libsqlite3-dev \
+		libssl-dev \
+		make \
+		tk-dev \
+		uuid-dev \
+		wget \
+		xz-utils \
+		zlib1g-dev \
+	; \
+	\
+	wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz"; \
+	wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc"; \
+	GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys "$GPG_KEY"; \
+	gpg --batch --verify python.tar.xz.asc python.tar.xz; \
+	command -v gpgconf > /dev/null && gpgconf --kill all || :; \
+	rm -rf "$GNUPGHOME" python.tar.xz.asc; \
+	mkdir -p /usr/src/python; \
+	tar --extract --directory /usr/src/python --strip-components=1 --file python.tar.xz; \
+	rm python.tar.xz; \
+	\
+	cd /usr/src/python; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+	./configure \
+		--build="$gnuArch" \
+		--enable-loadable-sqlite-extensions \
+		--enable-optimizations \
+		--enable-option-checking=fatal \
+		--enable-shared \
+		--with-lto \
+		--with-system-expat \
+		--without-ensurepip \
+	; \
+	nproc="$(nproc)"; \
+	make -j "$nproc" \
+		LDFLAGS="-Wl,--strip-all" \
+	; \
+	make install; \
+	\
+	cd /; \
+	rm -rf /usr/src/python; \
+	\
+	find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+		\) -exec rm -rf '{}' + \
+	; \
+	\
+	ldconfig; \
+	\
+	apt-mark auto '.*' > /dev/null; \
+	apt-mark manual $savedAptMark; \
+	find /usr/local -type f -executable -not \( -name '*tkinter*' \) -exec ldd '{}' ';' \
+		| awk '/=>/ { print $(NF-1) }' \
+		| sort -u \
+		| xargs -r dpkg-query --search \
+		| cut -d: -f1 \
+		| sort -u \
+		| xargs -r apt-mark manual \
+	; \
+	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+	rm -rf /var/lib/apt/lists/*; \
+	\
+	python3 --version
+
+# make some useful symlinks that are expected to exist ("/usr/local/bin/python" and friends)
+RUN set -eux; \
+	for src in idle3 pydoc3 python3 python3-config; do \
+		dst="$(echo "$src" | tr -d 3)"; \
+		[ -s "/usr/local/bin/$src" ]; \
+		[ ! -e "/usr/local/bin/$dst" ]; \
+		ln -svT "$src" "/usr/local/bin/$dst"; \
+	done
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.3
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 65.5.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67
+
+RUN set -eux; \
+	\
+	savedAptMark="$(apt-mark showmanual)"; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends wget; \
+	\
+	wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+	echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+	\
+	apt-mark auto '.*' > /dev/null; \
+	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark > /dev/null; \
+	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+	rm -rf /var/lib/apt/lists/*; \
+	\
+	export PYTHONDONTWRITEBYTECODE=1; \
+	\
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		--no-compile \
+		"pip==$PYTHON_PIP_VERSION" \
+		"setuptools==$PYTHON_SETUPTOOLS_VERSION" \
+	; \
+	rm -f get-pip.py; \
+	\
+	pip --version
+
+CMD ["python3"]
diff --git a/3.12-rc/slim-buster/Dockerfile b/3.12-rc/slim-buster/Dockerfile
new file mode 100644
index 000000000..b5ac1cca3
--- /dev/null
+++ b/3.12-rc/slim-buster/Dockerfile
@@ -0,0 +1,156 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM debian:buster-slim
+
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
+
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
+# runtime dependencies
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		ca-certificates \
+		netbase \
+		tzdata \
+	; \
+	rm -rf /var/lib/apt/lists/*
+
+ENV GPG_KEY 7169605F62C751356D054A26A821E680E5FA6305
+ENV PYTHON_VERSION 3.12.0a1
+
+RUN set -eux; \
+	\
+	savedAptMark="$(apt-mark showmanual)"; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		dpkg-dev \
+		gcc \
+		gnupg dirmngr \
+		libbluetooth-dev \
+		libbz2-dev \
+		libc6-dev \
+		libexpat1-dev \
+		libffi-dev \
+		libgdbm-dev \
+		liblzma-dev \
+		libncursesw5-dev \
+		libreadline-dev \
+		libsqlite3-dev \
+		libssl-dev \
+		make \
+		tk-dev \
+		uuid-dev \
+		wget \
+		xz-utils \
+		zlib1g-dev \
+	; \
+	\
+	wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz"; \
+	wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc"; \
+	GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys "$GPG_KEY"; \
+	gpg --batch --verify python.tar.xz.asc python.tar.xz; \
+	command -v gpgconf > /dev/null && gpgconf --kill all || :; \
+	rm -rf "$GNUPGHOME" python.tar.xz.asc; \
+	mkdir -p /usr/src/python; \
+	tar --extract --directory /usr/src/python --strip-components=1 --file python.tar.xz; \
+	rm python.tar.xz; \
+	\
+	cd /usr/src/python; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+	./configure \
+		--build="$gnuArch" \
+		--enable-loadable-sqlite-extensions \
+		--enable-optimizations \
+		--enable-option-checking=fatal \
+		--enable-shared \
+		--with-lto \
+		--with-system-expat \
+		--without-ensurepip \
+	; \
+	nproc="$(nproc)"; \
+	make -j "$nproc" \
+		LDFLAGS="-Wl,--strip-all" \
+	; \
+	make install; \
+	\
+	cd /; \
+	rm -rf /usr/src/python; \
+	\
+	find /usr/local -depth \
+		\( \
+			\( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+			-o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+		\) -exec rm -rf '{}' + \
+	; \
+	\
+	ldconfig; \
+	\
+	apt-mark auto '.*' > /dev/null; \
+	apt-mark manual $savedAptMark; \
+	find /usr/local -type f -executable -not \( -name '*tkinter*' \) -exec ldd '{}' ';' \
+		| awk '/=>/ { print $(NF-1) }' \
+		| sort -u \
+		| xargs -r dpkg-query --search \
+		| cut -d: -f1 \
+		| sort -u \
+		| xargs -r apt-mark manual \
+	; \
+	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+	rm -rf /var/lib/apt/lists/*; \
+	\
+	python3 --version
+
+# make some useful symlinks that are expected to exist ("/usr/local/bin/python" and friends)
+RUN set -eux; \
+	for src in idle3 pydoc3 python3 python3-config; do \
+		dst="$(echo "$src" | tr -d 3)"; \
+		[ -s "/usr/local/bin/$src" ]; \
+		[ ! -e "/usr/local/bin/$dst" ]; \
+		ln -svT "$src" "/usr/local/bin/$dst"; \
+	done
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.3
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 65.5.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67
+
+RUN set -eux; \
+	\
+	savedAptMark="$(apt-mark showmanual)"; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends wget; \
+	\
+	wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+	echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+	\
+	apt-mark auto '.*' > /dev/null; \
+	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark > /dev/null; \
+	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+	rm -rf /var/lib/apt/lists/*; \
+	\
+	export PYTHONDONTWRITEBYTECODE=1; \
+	\
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		--no-compile \
+		"pip==$PYTHON_PIP_VERSION" \
+		"setuptools==$PYTHON_SETUPTOOLS_VERSION" \
+	; \
+	rm -f get-pip.py; \
+	\
+	pip --version
+
+CMD ["python3"]
diff --git a/3.12-rc/windows/windowsservercore-1809/Dockerfile b/3.12-rc/windows/windowsservercore-1809/Dockerfile
new file mode 100644
index 000000000..2fa0f07a7
--- /dev/null
+++ b/3.12-rc/windows/windowsservercore-1809/Dockerfile
@@ -0,0 +1,87 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM mcr.microsoft.com/windows/servercore:1809
+
+SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
+
+# https://github.com/docker-library/python/pull/557
+ENV PYTHONIOENCODING UTF-8
+
+ENV PYTHON_VERSION 3.12.0a1
+
+RUN $url = ('https://www.python.org/ftp/python/{0}/python-{1}-amd64.exe' -f ($env:PYTHON_VERSION -replace '[a-z]+[0-9]*$', ''), $env:PYTHON_VERSION); \
+	Write-Host ('Downloading {0} ...' -f $url); \
+	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
+	Invoke-WebRequest -Uri $url -OutFile 'python.exe'; \
+	\
+	Write-Host 'Installing ...'; \
+# https://docs.python.org/3/using/windows.html#installing-without-ui
+	$exitCode = (Start-Process python.exe -Wait -NoNewWindow -PassThru \
+		-ArgumentList @( \
+			'/quiet', \
+			'InstallAllUsers=1', \
+			'TargetDir=C:\Python', \
+			'PrependPath=1', \
+			'Shortcuts=0', \
+			'Include_doc=0', \
+			'Include_pip=0', \
+			'Include_test=0' \
+		) \
+	).ExitCode; \
+	if ($exitCode -ne 0) { \
+		Write-Host ('Running python installer failed with exit code: {0}' -f $exitCode); \
+		Get-ChildItem $env:TEMP | Sort-Object -Descending -Property LastWriteTime | Select-Object -First 1 | Get-Content; \
+		exit $exitCode; \
+	} \
+	\
+# the installer updated PATH, so we should refresh our local value
+	$env:PATH = [Environment]::GetEnvironmentVariable('PATH', [EnvironmentVariableTarget]::Machine); \
+	\
+	Write-Host 'Verifying install ...'; \
+	Write-Host '  python --version'; python --version; \
+	\
+	Write-Host 'Removing ...'; \
+	Remove-Item python.exe -Force; \
+	Remove-Item $env:TEMP/Python*.log -Force; \
+	\
+	Write-Host 'Complete.'
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.3
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 65.5.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67
+
+RUN Write-Host ('Downloading get-pip.py ({0}) ...' -f $env:PYTHON_GET_PIP_URL); \
+	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
+	Invoke-WebRequest -Uri $env:PYTHON_GET_PIP_URL -OutFile 'get-pip.py'; \
+	Write-Host ('Verifying sha256 ({0}) ...' -f $env:PYTHON_GET_PIP_SHA256); \
+	if ((Get-FileHash 'get-pip.py' -Algorithm sha256).Hash -ne $env:PYTHON_GET_PIP_SHA256) { \
+		Write-Host 'FAILED!'; \
+		exit 1; \
+	}; \
+	\
+	$env:PYTHONDONTWRITEBYTECODE = '1'; \
+	\
+	Write-Host ('Installing pip=={0} ...' -f $env:PYTHON_PIP_VERSION); \
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		--no-compile \
+		('pip=={0}' -f $env:PYTHON_PIP_VERSION) \
+		('setuptools=={0}' -f $env:PYTHON_SETUPTOOLS_VERSION) \
+	; \
+	Remove-Item get-pip.py -Force; \
+	\
+	Write-Host 'Verifying pip install ...'; \
+	pip --version; \
+	\
+	Write-Host 'Complete.'
+
+CMD ["python"]
diff --git a/3.12-rc/windows/windowsservercore-ltsc2022/Dockerfile b/3.12-rc/windows/windowsservercore-ltsc2022/Dockerfile
new file mode 100644
index 000000000..3f473387f
--- /dev/null
+++ b/3.12-rc/windows/windowsservercore-ltsc2022/Dockerfile
@@ -0,0 +1,87 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM mcr.microsoft.com/windows/servercore:ltsc2022
+
+SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
+
+# https://github.com/docker-library/python/pull/557
+ENV PYTHONIOENCODING UTF-8
+
+ENV PYTHON_VERSION 3.12.0a1
+
+RUN $url = ('https://www.python.org/ftp/python/{0}/python-{1}-amd64.exe' -f ($env:PYTHON_VERSION -replace '[a-z]+[0-9]*$', ''), $env:PYTHON_VERSION); \
+	Write-Host ('Downloading {0} ...' -f $url); \
+	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
+	Invoke-WebRequest -Uri $url -OutFile 'python.exe'; \
+	\
+	Write-Host 'Installing ...'; \
+# https://docs.python.org/3/using/windows.html#installing-without-ui
+	$exitCode = (Start-Process python.exe -Wait -NoNewWindow -PassThru \
+		-ArgumentList @( \
+			'/quiet', \
+			'InstallAllUsers=1', \
+			'TargetDir=C:\Python', \
+			'PrependPath=1', \
+			'Shortcuts=0', \
+			'Include_doc=0', \
+			'Include_pip=0', \
+			'Include_test=0' \
+		) \
+	).ExitCode; \
+	if ($exitCode -ne 0) { \
+		Write-Host ('Running python installer failed with exit code: {0}' -f $exitCode); \
+		Get-ChildItem $env:TEMP | Sort-Object -Descending -Property LastWriteTime | Select-Object -First 1 | Get-Content; \
+		exit $exitCode; \
+	} \
+	\
+# the installer updated PATH, so we should refresh our local value
+	$env:PATH = [Environment]::GetEnvironmentVariable('PATH', [EnvironmentVariableTarget]::Machine); \
+	\
+	Write-Host 'Verifying install ...'; \
+	Write-Host '  python --version'; python --version; \
+	\
+	Write-Host 'Removing ...'; \
+	Remove-Item python.exe -Force; \
+	Remove-Item $env:TEMP/Python*.log -Force; \
+	\
+	Write-Host 'Complete.'
+
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.3
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 65.5.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67
+
+RUN Write-Host ('Downloading get-pip.py ({0}) ...' -f $env:PYTHON_GET_PIP_URL); \
+	[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
+	Invoke-WebRequest -Uri $env:PYTHON_GET_PIP_URL -OutFile 'get-pip.py'; \
+	Write-Host ('Verifying sha256 ({0}) ...' -f $env:PYTHON_GET_PIP_SHA256); \
+	if ((Get-FileHash 'get-pip.py' -Algorithm sha256).Hash -ne $env:PYTHON_GET_PIP_SHA256) { \
+		Write-Host 'FAILED!'; \
+		exit 1; \
+	}; \
+	\
+	$env:PYTHONDONTWRITEBYTECODE = '1'; \
+	\
+	Write-Host ('Installing pip=={0} ...' -f $env:PYTHON_PIP_VERSION); \
+	python get-pip.py \
+		--disable-pip-version-check \
+		--no-cache-dir \
+		--no-compile \
+		('pip=={0}' -f $env:PYTHON_PIP_VERSION) \
+		('setuptools=={0}' -f $env:PYTHON_SETUPTOOLS_VERSION) \
+	; \
+	Remove-Item get-pip.py -Force; \
+	\
+	Write-Host 'Verifying pip install ...'; \
+	pip --version; \
+	\
+	Write-Host 'Complete.'
+
+CMD ["python"]
diff --git a/Dockerfile-linux.template b/Dockerfile-linux.template
index 632e86cde..c76dadf37 100644
--- a/Dockerfile-linux.template
+++ b/Dockerfile-linux.template
@@ -68,6 +68,10 @@ ENV GPG_KEY {{
 		# gpg: key 64E628F8D684696D: public key "Pablo Galindo Salgado <pablogsal@gmail.com>" imported
 		"3.11": "A035C8C19219BA821ECEA86B64E628F8D684696D",
 		# https://www.python.org/dev/peps/pep-0664/#release-manager-and-crew
+
+		# gpg: key A821E680E5FA6305: public key "Thomas Wouters <thomas@python.org>" imported
+		"3.12": "7169605F62C751356D054A26A821E680E5FA6305",
+		# https://www.python.org/dev/peps/pep-0693/#release-manager-and-crew
 	}[rcVersion]
 }}
 ENV PYTHON_VERSION {{ .version }}
diff --git a/versions.json b/versions.json
index b74189f4b..3e8e7c3e0 100644
--- a/versions.json
+++ b/versions.json
@@ -41,6 +41,27 @@
     ],
     "version": "3.11.0"
   },
+  "3.12-rc": {
+    "pip": {
+      "sha256": "36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67",
+      "url": "https://github.com/pypa/get-pip/raw/6d265be7a6b5bc4e9c5c07646aee0bf0394be03d/public/get-pip.py",
+      "version": "22.3"
+    },
+    "setuptools": {
+      "version": "65.5.0"
+    },
+    "variants": [
+      "bullseye",
+      "slim-bullseye",
+      "buster",
+      "slim-buster",
+      "alpine3.16",
+      "alpine3.15",
+      "windows/windowsservercore-ltsc2022",
+      "windows/windowsservercore-1809"
+    ],
+    "version": "3.12.0a1"
+  },
   "3.7": {
     "pip": {
       "sha256": "36c6f6214694ef64cc70f4127ac0ccec668408a93825359d998fb31d24968d67",