Where is the data of a database running in a docker container stored?

Question

MongoDB

I have not worked with containers yet, I am just studying the topic. I see that it is quite easy to deploy a container with a mongo (or any other database), and hook a running application to it.

The issue is that the container can be rebuilt, removed, restarted, etc. How to save data?

Answer 1

There are options with volume connection, network drives and other garbage, but Docker developers write in black and white

Don't use Docker for persistent storage

In general, docker is not designed for these tasks. You don't need broken data when the container crashes?

Answer 2

If the container was not created by a moron, then the data is stored in an external volume.

Answer 3

folder mounting

volumes:
      - ./resource/sql:/tmp/sql
      - ./resource/docker/mysql/data:/var/lib/mysql
      - ./resource/docker/mysql/config:/etc/mysql/conf.d
      - ./log/docker:/var/log/mysql