Change base image of arm-ui devel image

Description

Changed build base image, as we don't need such a large image if we are only running one service (frontend)
- Image shrunk from 1GB -> 160MB

Removed comments from Dockerfile
- Way to many (IMHO) and was harder to read

Broke UI requirements to its own file, to help track requirements separately
- It will be easier to track, and help keeps things manageable to have separate requirements for each container

Removed comments from health check, also udev isnt needed in UI container so was removed.
- Comments didnt really help, as for the ripper we know already what needs checking for the container to work, so the comments dont help

Fixes # None

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Build, ran on docker.

• Docker
• Other (Please state here)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have tested that my fix is effective or that my feature works

Changelog:

Include the details of changes made here
Summary of changes

• Dockerfile-UI

  • Rewritten to use python:3.12.1-alpine with a builder stage to compile/install Python deps and a minimal final runtime stage.
  • Sets ARM_UID/ARM_GID to 1000, PYTHONUNBUFFERED and PIP_NO_CACHE_DIR.
  • Installs build deps in the builder and copies installed packages into the final image.
  • Creates non-root arm user (uid/gid 1000) and runs the container as USER arm.
  • Copies repo into /opt/arm and sets git safe.directory.
  • Removes Debian/my_init/runit and ripper-specific install steps from the UI image.
  • Default CMD changed to run the UI directly: python3 /opt/arm/arm/runui.py
    requirements_ui.txt (new)
  • New, UI-focused dependency list (Flask 3.x, Werkzeug, Jinja2, SQLAlchemy + Alembic/Flask-Migrate, mysql-connector-python, waitress, psutil, pyudev, Flask-Login, Flask-WTF, bcrypt, etc.).
    Helps separate UI deps from ripper/tooling dependencies.
  • Added a copy comments.json as arm now looks for it inside /arm/app/comments.json

• docker-compose.yml

  • ARM_UID and ARM_GID environment variables updated from 1001 -> 1000.
  • arm-db user mapping updated to 1000:1000.

• temp_healthcheck.sh

  • Simplified to only perform an HTTP check against the UI endpoint (removed udev and ripper checks).

Logs

Attach logs from successful test runs here