TCHAP: add message error for external users #363

	#Build the application
	name: Build without E2E tests
	on:
	pull_request: {}
	push:
	branches: [master]
	workflow_dispatch: # for running action manually

	env:
	# These must be set for fetchdep.sh to get the right branch
	REPOSITORY: ${{ github.repository }}
	PR_NUMBER: ${{ github.event.pull_request.number }}
	jobs:
	build:
	name: "Build"
	runs-on: ubuntu-latest

	# Only run on draft PRs. On ready_for_review PRs, we already have the Cypress job which runs the build
	if: github.event.pull_request.draft == true

	steps:
	- uses: actions/checkout@v4
	- name: Get Node Version
	id: node_version
	run: echo ::set-output name=node_version::$(node -e 'console.log(require("./package.json").engines.node)')
	- uses: actions/setup-node@v3
	with:
	cache: "yarn"
	node-version: ${{ steps.node_version.outputs.node_version }}
	- name: Install Dependencies
	run: "yarn install"

	- name: "Copy the config file at the right place"
	run: "cp config.dev.json config.json" # todo we could make the choice of backend configurable.

	- name: Build
	run: "yarn build"

	- name: Upload build in artifact
	uses: actions/upload-artifact@v3
	with:
	name: devbuild # because we used the dev config file
	path: webapp
	# We'll only use this in a triggered job, then we're done with it
	retention-days: 1

Provide feedback