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You can accomplish the same thing using environment variables. You can pass them in at build time or deploy time. `ENVIRONMENT=dev docker-compose up` or `docker-compose build --build-arg ENVIRONMENT=dev` and in your case maybe you write some function `find_answer() { something-async ... }; ENVIRONMENT=$(find_answer) docker-compose ...` You can also read in .env files... Which in my opinion is cleaner since you can ch…
It's a simple example, maybe too simple to get the point. What I want is to conditionally set things on a yaml file. If you have ever used a templating language, you know this problem services: redis: ... {{ if some_condition }} volumes: bla bla {{ end if }} {{ if some_other_condition }} another_service: ... {{ end if }} volumes: {{ for volume in volumes }} - ... {{ end for }}
Re: Docker Compose best practices for dev and prod
#141The compose file is declarative for clarity, so instead of fighting it, do the things you want to do at other levels. Variables? Pass in some env vars. Conditionals? You can specify multiple configuration files so that whatever calls `docker compose up` can deal with the conditionals of deciding which config files to include.