I have a Docker installation on Ubuntu, using Portainer to manage it. I have an n8n container and a Supabase container running properly and can access both from the internet, but have no success using n8n to connect to Supabase via setting up an n8n account credential. Likely some issue with Docker networking not allowing n8n to reach Supabase, or perhaps I’ve got the host wrong in the n8n account credential.

I do have a Docker bridge network with both of those containers added and have tried different things for the Supabase host (in combination with the correct Service Role Secret), but to no avail. There is another container (MySQL) running under the same Docker install that n8n is able to connect to successfully via the same bridge network.

Supabase installs a number of services, so I’m not sure if I should be using the Kong service container name as the host in the n8n Supabase credential, or what.

Thanks in advance for any help!