How to persist data in a dockerized postgres database using volumes

Question

My docker compose file has three containers, web, nginx, and postgres. Postgres looks like this:

postgres:
  container_name: postgres
  restart: always
  ima         


        

Answer 1

I would avoid using a relative path. Remember that docker is a daemon/client relationship.

When you are executing the compose, it's essentially just breaking down into various docker client commands, which are then passed to the daemon. That ./database is then relative to the daemon, not the client.

Now, the docker dev team has some back and forth on this issue, but the bottom line is it can have some unexpected results.

In short, don't use a relative path, use an absolute path.