Update run-ci to use setup-e2e-environment-v7 #460

	name: Test healthcheck action

	on:
	push:
	pull_request:
	branches: [main]

	jobs:
	test-healthcheck-success:
	name: Verifies whether healthcheck action succeeds when it should
	runs-on: ubuntu-20.04

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Startup sample HTTP server
	run: docker run -d -p 8080:80 nginxdemos/hello

	- name: Verify that healthcheck succeeds
	uses: ./github-actions/healthcheck
	with:
	retries: 2
	command:
	"curl --fail http://localhost:8080 --output /dev/null --silent"

	# Note: it does not seem to be possible for now to create a CI job for testing a failing
	# healthcheck. I have tested it manually however...

Provide feedback