Canary has only one feature. It replies "Canary is alive!".
Buildt in Rust with the Actix-web 3 framework on distroless image.
https://hub.docker.com/r/acje/canary/
Run:
docker run -e "PORT=8080" -p 8080:8080 acje/canary:latest
Response at http://localhost:8080/
On cloud run: https://canary-app-acje-qvw63kdulq-ue.a.run.app/