Update actions to build container for ghcr.io #1

	name: Build Docker Container

	on:
	workflow_dispatch:
	push:
	paths-ignore:
	- '.gitignore'
	- 'LICENSE'
	- 'README.md'

	env:
	DOCKER_OWNER: ${{ github.repository_owner }}
	DOCKER_CONTAINER: bibliothek
	DOCKER_TAG: ${{ github.ref_name }}

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Fix Docker environment variables
	run: \|
	# Make lowercase
	echo "DOCKER_OWNER=$(echo $DOCKER_OWNER \| tr '[A-Z]' '[a-z]')" >> $GITHUB_ENV
	echo "DOCKER_CONTAINER=$(echo $DOCKER_CONTAINER \| tr '[A-Z]' '[a-z]')" >> $GITHUB_ENV
	echo "DOCKER_TAG=$(echo $DOCKER_TAG \| tr '[A-Z]' '[a-z]')" >> $GITHUB_ENV

	# Replace / with _
	echo "DOCKER_TAG=$(echo $DOCKER_TAG \| sed -e 's/\//_/g')" >> $GITHUB_ENV

	- name: Build the Docker image
	run: \|
	docker build . --file Dockerfile --tag $DOCKER_CONTAINER:$DOCKER_TAG
	[[ "${{ github.ref }}" == "refs/heads/master" ]] && docker tag $DOCKER_CONTAINER:$DOCKER_TAG ghcr.io/$DOCKER_OWNER/$DOCKER_CONTAINER:latest
	docker tag $DOCKER_CONTAINER:$DOCKER_TAG ghcr.io/$DOCKER_OWNER/$DOCKER_CONTAINER:$DOCKER_TAG

	- name: Log in to registry
	run: echo "${{ secrets.GITHUB_TOKEN }}" \| docker login ghcr.io -u $ --password-stdin

	- name: Push to GHCR
	run: \|
	[[ "${{ github.ref }}" == "refs/heads/master" ]] && docker push ghcr.io/$DOCKER_OWNER/$DOCKER_CONTAINER:latest
	docker push ghcr.io/$DOCKER_OWNER/$DOCKER_CONTAINER:$DOCKER_TAG

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