Docker #128

	name: Docker

	# This workflow uses actions that are not certified by GitHub.
	# They are provided by a third-party and are governed by
	# separate terms of service, privacy policy, and support
	# documentation.

	on:
	schedule:
	- cron: '31 0 * * *'
	workflow_dispatch:
	push:
	branches: [ "main" ]
	# Publish semver tags as releases.
	tags: [ 'v..*' ]
	pull_request:
	branches: [ "main" ]

	env:
	# Uses docker.io for Docker Hub if empty
	REGISTRY: ghcr.io
	# github.repository as <account>/<repo>
	IMAGE_NAME: ${{ github.repository }}
	# Rust nightly toolchain version
	NIGHTLY_VERSION: ${{ vars.NIGHTLY_VERSION }}


	jobs:
	build:

	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

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

	- name: Build container
	shell: bash
	run: docker build --pull -t build_image . --build-arg NIGHTLY_VERSION=${{ env.NIGHTLY_VERSION }}

	- name: Tag nightly
	if: github.event_name != 'pull_request'
	shell: bash
	run: docker tag build_image "${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:nightly"

	# Login against a Docker registry except on PR
	# https://github.com/docker/login-action
	- name: Log into registry ${{ env.REGISTRY }}
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v2
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	# Push Docker image (don't push on PR)
	- name: Publish
	if: github.event_name != 'pull_request'
	shell: bash
	run: \|
	docker image push --all-tags "${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}"

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