Add some TDC guides #3

	name: Build
	on:
	push:
	branches:
	- main
	jobs:
	build:
	name: Release
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout Repo
	uses: actions/checkout@v2
	# workaround as there is no way to get the Release name or just the tag name by itself
	- name: Extract branch name
	shell: bash
	run: echo "##[set-output name=tag;]$(echo ${GITHUB_REF#refs/tags/})"
	id: extract_tag
	- name: Build Lab Image
	env:
	VERSION: ${{ github.sha }}
	run: \|
	make build version=$VERSION
	- name: Prune dangling images
	run: docker image prune -f
	- name: Login to GitHub Package Registry
	uses: docker/login-action@v1
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Publish version to GitHub Package Registry
	env:
	VERSION: ${{ github.sha }}
	run: \|
	make release version=$VERSION

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