pre-init shinyproxy #128

# to view logs

	name: ci
	on:
	pull_request:
	types: [closed, opened, synchronize, reopened]
	branches:
	- master

	concurrency:
	group: build-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	env:
	DOCKERHUB_REPO: alexvpickering/dseqr

	jobs:
	build-test-push:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2

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

	- name: Login to DockerHub
	uses: docker/#-action@v2
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Build Docker image
	uses: docker/build-push-action@v3
	with:
	context: .
	target: testing
	load: true
	cache-from: type=registry,ref=${{ env.DOCKERHUB_REPO }}:buildcache
	tags: ${{ env.DOCKERHUB_REPO }}:testing

	# push cache that includes production and testing
	- name: Push buildcache to DockerHub
	uses: docker/build-push-action@v2
	with:
	context: .
	cache-to: type=registry,ref=${{ env.DOCKERHUB_REPO }}:buildcache,mode=max

	- name: Test pull request
	if: github.event.pull_request.merged == false
	run: \|
	docker run --rm ${{ env.DOCKERHUB_REPO }}:testing

	- name: Push production to DockerHub on merge
	uses: docker/build-push-action@v2
	if: github.event.pull_request.merged == true
	with:
	context: .
	target: production
	push: true
	tags: ${{ env.DOCKERHUB_REPO }}:latest

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