openssl genrsa -aes256 -out ca-key.pem 2048

openssl req -new -x509 -days 365 -key ca-key.pem -sha256 -out ca.pem

openssl genrsa -out server-key.pem 2048

openssl req -subj "/CN=$HOST" -new -key server-key.pem -out server.csr

echo subjectAltName = IP:$YOUR_PUBLIC_IP > extfile.cnf

openssl x509 -req -days 365 -in server.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out server-cert.pem -extfile extfile.cnf

openssl genrsa -out key.pem 2048

openssl req -subj '/CN=client' -new -key key.pem -out client.csr

echo extendedKeyUsage = clientAuth > extfile.cnf

openssl x509 -req -days 365 -in client.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out cert.pem -extfile extfile.cnf

rm -v client.csr server.csr

chmod -v 0400 ca-key.pem key.pem server-key.pem

chmod -v 0444 ca.pem server-cert.pem cert.pem

mkdir -pv ~/.docker

cp -v {ca,cert,key}.pem ~/.docker

export DOCKER_HOST=tcp://$HOST:7778 DOCKER_TLS_VERIFY=1

export DOCKER_CERT_PATH=~/.docker/zone1/