feat: add heartbeat backstop and external liveness check #33

	name: CI

	on:
	push:
	branches:
	- main
	pull_request:

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

	permissions:
	contents: read

	jobs:
	rust:
	name: Rust checks
	runs-on: ubuntu-latest

	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Install stable Rust
	uses: dtolnay/rust-toolchain@stable
	with:
	components: rustfmt

	- name: Cache Rust dependencies
	uses: Swatinem/rust-cache@v2

	- name: Check formatting
	run: cargo fmt --check

	- name: Run test suite
	run: cargo test --locked

	docker:
	name: Docker smoke build
	runs-on: ubuntu-latest

	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Validate compose file
	run: docker compose config

	- name: Build container image
	run: docker build --tag praxis:ci .

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