Update to version $GS_VERSION #499

	name: Docker build and push

	on:
	push:
	branches: ['v..*']

	jobs:
	docker:
	name: docker build and push
	runs-on: ubuntu-latest

	steps:
	- name: Checkout 🙂
	uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Create image and tag names 😊
	id: meta
	uses: docker/metadata-action@v3
	with:
	images: terrestris/geoserver
	tags: \|
	type=ref,event=branch
	- name: Generate docker tag 😝
	run: echo "docker_tag=$(echo ${{ steps.meta.outputs.tags }} \| sed 's\|^terrestris/geoserver:v\|terrestris/geoserver:\|')" >> $GITHUB_ENV
	id: generate-docker-tag
	- name: Set up QEMU 🤗
	uses: docker/setup-qemu-action@v1
	- name: Set up Docker Buildx 🤯
	uses: docker/setup-buildx-action@v1
	- name: Login to DockerHub 😎
	uses: docker/login-action@v1
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}
	- name: Build and push 🥳
	id: docker_build
	uses: docker/build-push-action@v2
	with:
	push: true
	tags: ${{ env.docker_tag }}, terrestris/geoserver:latest
	context: .
	file: Dockerfile

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