cleanup #3110

	name: Polypheny-DB Docker CI

	on:
	push:
	pull_request:
	types: [ opened, synchronize, reopened, ready_for_review ]

	jobs:
	build:
	if: ${{ github.event_name != 'pull_request' \|\| github.event.pull_request.draft == false }}
	runs-on: ubuntu-latest
	name: Docker Tests (Java 11)
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up JDK
	uses: actions/setup-java@v1
	with:
	java-version: 11
	- name: Set env variable
	run: \|
	echo "POLYPHENY_HOME=$GITHUB_WORKSPACE" >> $GITHUB_ENV
	- name: Create folders for certs
	run: \|
	mkdir $POLYPHENY_HOME/.polypheny
	mkdir $POLYPHENY_HOME/.polypheny/certs
	- name: Start Docker container
	run: docker-compose up -d
	- name: Assemble
	uses: nick-invision/retry@v2
	with:
	max_attempts: 2
	timeout_minutes: 60
	command: ./gradlew assemble
	- name: Build Plugins
	uses: nick-invision/retry@v2
	with:
	max_attempts: 1
	timeout_minutes: 60
	command: ./gradlew assemblePlugins
	- name: Execute Docker tests
	uses: nick-invision/retry@v2
	with:
	max_attempts: 2
	timeout_minutes: 25
	command: ./gradlew dockerTests

Provide feedback