Write a Dockerfile that compiles and then runs the web server in this repository.
Write it as if the container will be used in production.
This Go webserver compiles with Go version 1.12+.
It exposes a web server on port 8080 and logs to STDOUT. The port is configurable by setting the PORT environment variable.
It only has one endpoint that returns status code 200: /health. All other requests will return 404: "404 page not found".