ERROR: In file './docker-compose.yml', volume must be a mapping not a string

Question

Question: Why do I get this error?

ERROR: In file \'./docker-compose.yml\', volume \'mariavolume\' must be a mapping not a string.

Answer 1

Unfortunately, there is no such a feature.

You can’t map a top-level volume in docker-compose.

Here are the options:

• Adding volume per container and map it there. (like what Daniel did here)

• Create a volume outside of the compose (with mapping) and use it in your compose.

  volumes:
     maria_volume: 
         external:
             name: volume-name