gcrk
Thanks for reaching and sorry if I wasn't that clear. So far the Funkwhale containers are running and using the same network (swag_default). I've used and edited a SWAG proxy-conf subdomain template with the funkwhale-front-1 container name and the dedicated port.
Right now when I reach funkwhale-front-1.[subdomain].duckdns.org, there's a page with a blank left toolbar and the 'Loading Funkwhale...' message for 20 seconds, then a blank page.