This is a simplified version and for demo purposes, there are numerous aspects to improve this implementation, feel free to send your PR.

This app can be run using Docker, to build the image run the next command:

docker build -t app .

To create an abstraction with the host, you can run the test over the previous built docker image:

docker run --rm -it app composer test

To run the app using docker, you must build the image using the previous build step, after that you can run the next command to run the app on port 8000.

docker run --rm -it -p 8000:8000 app

Using another terminal or your browser you can check the search endpoint:

curl http://localhost:8000/beers?query=pizza

And the detail endpoint:

curl http://localhost:8000/beers/13

If you have jq tool installed in your system, you can get a pretty version with these commands:

curl http://localhost:8000/beers?query=nachos | jq -r '.'
curl http://localhost:8000/beers/12 | jq -r '.'