Add test for running the Docker image on CI #114

	## Based on https:/actions-rs/meta/blob/master/recipes/quickstart.md
	name: Test

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	test:
	name: Test
	runs-on: ubuntu-latest
	steps:
	- name: Checkout sources
	uses: actions/checkout@v2

	- name: Install stable toolchain
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: 1.76.0
	override: true
	components: clippy, rustfmt

	- uses: Swatinem/rust-cache@v1

	- name: Check
	uses: actions-rs/cargo@v1
	with:
	command: check
	args: --all --all-targets

	- name: Test
	uses: actions-rs/cargo@v1
	with:
	command: test
	args: --all

	- name: Lint code
	uses: actions-rs/cargo@v1
	with:
	command: clippy
	args: --all

	- name: Check formatting
	uses: actions-rs/cargo@v1
	with:
	command: fmt
	args: --all -- --check
	docker:
	name: Test Docker
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repo
	uses: actions/checkout@v3
	- uses: docker/setup-buildx-action@v2
	- name: Build the Docker image
	uses: docker/build-push-action@v4
	with:
	context: .
	cache-from: type=gha
	cache-to: type=gha,mode=max
	tags: bors
	load: true
	- name: Run Docker image
	run: \|
	# Check that the service starts
	docker run bors &
	timeout 20 bash -c 'until nc -z localhost 8080; do sleep 1; done'

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