add a gh action for testing build images #2

	name: Push Docker Images

	on:
	push:
	branches:
	- master

	jobs:
	push:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

	env:
	IMAGE_NAME: litehex/pgbouncer
	LATEST: '1.21.0'

	strategy:
	matrix:
	pgbouncer-version: [ '1.19.1', '1.20.1', '1.21.0' ]

	steps:
	- uses: actions/checkout@v3

	- name: Login to DockerHub
	uses: docker/login-action@v1
	with:
	registry: docker.io
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Set Dockerfile ARG version
	run: sed -i 's/ARG VERSION=.*/ARG VERSION=${{ matrix.pgbouncer-version }}/g' Dockerfile

	- name: Push to Docker Registry
	uses: docker/build-push-action@v2
	with:
	context: .
	file: ./Dockerfile
	push: true
	tags: docker.io/${{ env.IMAGE_NAME }}:${{ matrix.pgbouncer-version }}

	- name: Add latest tag if the version is the latest
	if: matrix.pgbouncer-version == env.LATEST
	run: \|
	docker tag ${IMAGE_NAME}:${{ matrix.pgbouncer-version }} ${IMAGE_NAME}:latest
	docker push ${IMAGE_NAME}:latest

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