Different env-file but same yml with Docker Compose?

Question

I find it quite common that I have multiple environments (for example test and prod) but the Docker containers that I wish to start are the same in both environments. The only d

Answer 1

Nice clear examples, however this did not initially work for me until I updated the base.yml to call the ash shell.

base.yml

base:
    image: busybox
    command: ash -c 'echo "${WHO:-Simon} says, \"${SHOUTOUT:-Silence is golden.}\""'