select non-None value when reducing a list of strings #66

	name: Docker

	on:
	push:
	tags:
	- '*'

	jobs:
	# Push image to GitHub Packages.
	# See also https://docs.docker.com/docker-hub/builds/
	push:
	runs-on: ubuntu-latest
	if: github.event_name == 'push'

	permissions:
	packages: write
	contents: read

	steps:
	- uses: actions/checkout@v3

	- name: Build image
	run: docker build -t report .

	- name: Log into GitHub Container Registry
	run: echo "${{ secrets.GITHUB_TOKEN }}" \| docker login https://ghcr.io -u ${{ github.actor }} --password-stdin

	- name: Push image to GitHub Container Registry
	run: \|
	IMAGE_ID=ghcr.io/${{ github.repository }}
	VERSION=$(echo "${{ github.ref }}" \| sed -e "s/^refs\/tags\///")

	echo IMAGE_ID=$IMAGE_ID
	echo VERSION=$VERSION

	docker tag report $IMAGE_ID:$VERSION
	docker tag report $IMAGE_ID:latest
	docker push $IMAGE_ID:$VERSION
	docker push $IMAGE_ID:latest

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