Add will_set to Paho #17

	name: Build and push p2k16-label docker image

	on:
	release:
	types: [published]

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

	# steps to perform in job
	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Login to Github Packages
	uses: docker/login-action@v1
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Get the version
	id: vars
	run: echo ::set-output name=tag::$(echo ${GITHUB_REF:10})

	- name: Build image and push to GitHub Container Registry
	uses: docker/build-push-action@v2
	with:
	# relative path to the place where source code with Dockerfile is located
	context: ./p2k16-label
	# Note: tags has to be all lower-case
	tags: \|
	ghcr.io/bitraf/p2k16-label:${{steps.vars.outputs.tag}}
	ghcr.io/bitraf/p2k16-label:latest
	# this will push on every release, which is what we want
	push: true

	# - name: Debug info
	# id: debug1
	# run: \|
	# echo debug github.ref = ${GITHUB_REF}
	# echo debug2 github.ref = ${{ github.ref }}
	# so, GITHUB_REF is equal to the release tag, for example refs/tags/v0.3.0.2
	# and github.ref is also equal to the release tag, example refs/tags/v0.3.0.5

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