Docker build CI triggered from @sduchesneau of #74

	name: Docker build CI
	run-name: Docker build CI triggered from @${{ github.actor }} of ${{ github.head_ref }}

	on:
	workflow_dispatch:
	pull_request:
	push:
	tags:
	- '*'
	branches:
	- release/*

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	docker:
	name: Docker build
	runs-on: ubuntu-20.04
	permissions:
	contents: read
	packages: write

	steps:
	- name: Delete files
	shell: bash
	run: \|
	df -h
	sudo rm -rf /usr/share/dotnet
	sudo rm -rf /usr/local/lib/android
	sudo rm -rf /opt/ghc
	sudo rm -rf /opt/hostedtoolcache/CodeQL
	df -h

	- name: Checkout
	uses: actions/checkout@v3
	with:
	submodules: recursive

	- name: Log in to the Container registry
	uses: docker/login-action@v2
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Generate docker tags/labels from github build context
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	# We tag latest only release of the form <variant>-v<major>.<minor>.<patch>-fh2.1 so "rc/beta" version are not flagged as latest
	# - 2 docker tags: `{geth\|bsc\|...}-latest` and `{git-tag}`
	tags: \|
	type=ref,event=tag,priority=1000,prefix=nitro-
	type=ref,enable=true,priority=600,prefix=nitro-,suffix=,event=branch

	- name: Build and push Docker image
	uses: docker/build-push-action@v4
	with:
	context: .
	file: ./Dockerfile
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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