Using current user when running container in docker-compose

Question

Building on top of the answer by Joepreludian, focusing on docker-compose:

You can use the user: and volumes: options in the compose file. For example:

  my-service:
    image: ubuntu:latest
    user: ${MY_UID}:${MY_GID}
    volumes:
      - /etc/passwd:/etc/passwd:ro
      - /etc/group:/etc/group:ro

and define these variables where you are starting your compose:

MY_UID="$(id -u)" MY_GID="$(id -g)" docker-compose up