Docker installation - "error connecting to db server: no reachable servers"

[madcerto]

Hi, I did a fresh install with the docker compose file on a Ubuntu LTS server, and when running the first installation command, for initializing data, it ends with this error message:

INFO:apps.prepopulate.app_initialize:Data import finished
INFO:superdesk:Command finished with: 0
installing demo data
2023-08-01T23:05:58.509+0200    Failed: error connecting to db server: no reachable servers

The client runs on http://<server ip>:8080, but it displays nothing and in the console it says that getting /api/client_config fails with error 502 (bad gateway).

The only thing I've changed is client/superdesk.config.js to replace localhost with my server's IP. Changed that back and it just failed the connection entirely, because of course localhost isn't the server. I've also turned off the firewall.

[madcerto]

Small update: it seems like i get the same error in browser console when running superdesk locally for the first few seconds after running it. After at max a couple minutes, it works as expected. No such error in console though, when running the initialization commands.