refactor: update network refs form "traefik-proxy" to "proxy"

- To allow testing dev vers of other services

metube/compose.yaml

@@ -14,7 +14,7 @@ services:
       - ./MeTube_downloads:/downloads
     labels:
       - traefik.enable=true
-      - "traefik.docker.network=traefik-proxy"
+      - "traefik.docker.network=proxy"
 
       # Prod Router
       - "traefik.http.routers.metube.rule=Host(`metube.forust.xyz`)"
@@ -39,7 +39,7 @@ services:
       - "traefik.http.routers.metube-dev.tls=true"
 
     networks:
-      - traefik-proxy
+      - proxy
 networks:
-  traefik-proxy:
+  proxy:
     external: true