Add FoX to installation. #36

	name: docker-images

	on:
	push:
	branches:
	- 'main'
	tags:
	- 'v..*'
	pull_request:
	branches:
	- 'main'
	env:

	# set the image name prefix. We cannot use ${{ github.repository }}, as it
	# contains upper-case letters and that currently does not work for the cache
	# registry.
	IMAGE_PREFIX: cosima/access-om3-ci-images

	jobs:
	docker:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	compiler: [gcc]

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

	- name: Docker meta
	id: meta
	uses: docker/metadata-action@v4
	with:
	# list of Docker images to use as base name for tags
	images: \|
	ghcr.io/${{ env.IMAGE_PREFIX }}/${{ matrix.compiler }}
	# generate Docker tags based on the following events/attributes
	tags: \|
	type=ref,event=branch
	type=ref,event=pr
	type=semver,pattern={{version}}
	type=semver,pattern={{major}}.{{minor}}
	type=semver,pattern={{major}}
	type=raw,value=latest,enable={{is_default_branch}}
	type=sha

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v2

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2

	- name: Login to GHCR
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push
	uses: docker/build-push-action@v3
	with:
	context: ${{ matrix.compiler }}
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	cache-from: type=registry,ref=ghcr.io/${{ env.IMAGE_PREFIX }}/${{ matrix.compiler }}
	cache-to: type=inline

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