add linux/arm/v7 architecture to Docker build workflow #45

	name: docker

	on:
	push:
	branches:
	- master
	- develop
	paths-ignore:
	- '**.md'

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

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: checkout code
	uses: actions/checkout@v2
	- name: define branch name
	run: echo "BRANCH=$(git rev-parse --abbrev-ref HEAD)" >> $GITHUB_ENV
	- name: define commit hash
	run: echo "COMMIT_HASH=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
	- name: define staging tag
	if: env.BRANCH == 'develop'
	run: echo "TAG=staging" >> $GITHUB_ENV
	- name: define latest tag
	if: env.BRANCH == 'master'
	run: echo "TAG=latest" >> $GITHUB_ENV
	- name: set up qemu
	uses: docker/setup-qemu-action@v1
	- name: set up buildx
	id: docker_buildx
	uses: docker/setup-buildx-action@v1
	- name: log in to ghcr
	uses: docker/login-action@v1
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ secrets.SERVICE_USER }} # Defined in secrets for auth to registry
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: build and push
	uses: docker/build-push-action@v2
	with:
	builder: ${{ steps.docker_buildx.outputs.name }}
	platforms: linux/amd64, linux/arm64, linux/arm/v7
	push: true
	tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.TAG }}, ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.COMMIT_HASH }}
	build-args:
	PASTY_VERSION=${{ env.BRANCH }}-${{ env.COMMIT_HASH }}

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