Setup docker instance with pre existing postgresql db? about ctfnote HOT 2 OPEN

Hi @AngelouDi,

To achieve this, I think you will need to connect the ctfnote API to the "host network":

https://docs.docker.com/network/host/

This way, the container will share the same network as the host and it will be able to communicate with an external service.

If the database is in the same network as the API, you will just have to modify the environment variable provided to the API container in the docker-compose.yml file.

    environment:
      # [...]
      DB_HOST: db # Change here
      DB_PORT: 5432 # Change here
      WEB_PORT: 3000

from ctfnote.

I think it is also possible to only map the single host port to port 5432 in the container: https://docs.docker.com/compose/networking/. This way, you don't expose all your host ports to the containers but only the port they require to reach.

from ctfnote.