Docker compose exmaple?

[SawkeeReemo]

I use docker compose for several containers, but I'm not always sure how to convert a docker run command to a compose. Building on an Ubuntu LTS 22.04 system, Docker v26.0.2, Docker Compose version v2.26.1.

Here is my initial attempt, but would love some confirmation to know if I'm doing it correctly:

  monero:
    image: monero:build-env-linux:v0.18.3.3
    container_name: monero
    command: sh -c 'make release-static -j4'
    volumes:
      - /my_config_dir/monero:/monero-gui

My guesses:
image tag, assuming that's correct?
command, no idea if I need that or what to do there.

Any help would be greatly appreciated! And then once it's running, how do I access it? I don't see any ports or environmental variables to add, which usually determines how I access a container.