Add metadata extraction action to gh workflow #45

	name: build-push-latest-version
	on:
	workflow_dispatch:
	push:
	paths-ignore:
	- README.md
	- LICENSE
	- docker-compose.yml
	- docker-compose-multi.yml
	branches:
	# - master
	- add-metedata-to-image

	env:
	IMAGE_NAME: dcagatay/pwless-pgadmin4

	jobs:
	build-push-latest:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Get version from Dockerfile
	id: version_provider
	run: \|
	VERSION=$(grep 'ARG BASE_VERSION' Dockerfile \| awk -F= '{print $2}')
	echo "BASE_CONTAINER_VERSION=$VERSION" >> "$GITHUB_ENV"

	- name: debug
	run: \|
	echo "::debug:: ${{ env.BASE_CONTAINER_VERSION }}"

	- name: Login to DockerHub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Extract metadata
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ${{ env.IMAGE_NAME }}

	- name: debug2
	run: \|
	echo "::debug:: ${{ steps.meta.outputs.tags }}"

	- name: Build and push
	uses: docker/build-push-action@v5
	with:
	platforms: linux/amd64,linux/arm64
	push: false
	cache-from: \|
	${{ env.IMAGE_NAME }}:latest
	tags: \|
	${{ env.IMAGE_NAME }}:latest
	${{ env.IMAGE_NAME }}:${{ env.BASE_CONTAINER_VERSION }}

	# - name: Update repo description
	# uses: peter-evans/dockerhub-description@v3
	# with:
	# username: ${{ secrets.DOCKERHUB_USERNAME }}
	# password: ${{ secrets.DOCKERHUB_TOKEN }}
	# repository: ${{ env.IMAGE_NAME }}

Provide feedback