psc-spack-ubuntu-20.04: check version #20

	name: psc-cpp-ubuntu-20.04 build and push to GHCR

	on:
	push:
	branches: [ main ]

	jobs:

	psc-cpp-ubuntu-20-04:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Docker Buildx
	id: buildx
	uses: docker/setup-buildx-action@v1
	- name: Cache Docker layers
	uses: actions/cache@v4
	with:
	path: /tmp/.buildx-cache
	key: ${{ runner.os }}-buildx-${{ github.sha }}
	restore-keys: \|
	${{ runner.os }}-buildx-

	- name: Login to ghcr
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v1
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Build and push
	id: docker_build
	uses: docker/build-push-action@v2
	with:
	context: .
	file: docker/psc-cpp-ubuntu-20.04/Dockerfile
	builder: ${{ steps.buildx.outputs.name }}
	push: true
	tags: ghcr.io/psc-code/psc-cpp-ubuntu-20.04:latest
	cache-from: type=local,src=/tmp/.buildx-cache
	cache-to: type=local,dest=/tmp/.buildx-cache
	- name: Image digest
	run: echo ${{ steps.docker_build.outputs.digest }}

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