Added initial deployment instructions. #16

	# This workflow performs basic checks:
	#
	# 1. run a preparation step to install and cache node modules
	# 2. once prep succeeds, run lint and test in parallel
	#
	# The checks are skipped on the 'main' branch. The project relies on branch
	# protection to avoid pushes straight to 'main'.

	name: Checks

	on:
	push:
	branches-ignore:
	- 'main'

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:

	- name: Checkout
	uses: actions/checkout@v2

	- name: Log in to the Container registry
	uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build container
	uses: docker/build-push-action@v6
	with:
	platforms: linux/amd64
	context: webapp/
	file: ./webapp/Dockerfile
	push: true
	tags: "ghcr.io/${{ github.repository_owner }}/polder:dev"

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