fix: alias gitea.ginnoir.com on Caddy for Portainer go-git TLS

Portainer go-git resolves gitea.ginnoir.com inside Docker. Alias was on
the gitea container → port 443 refused. Moved alias to Caddy so go-git
reaches Caddy:443 (TLS ok) → proxies to gitea:3000.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

portainer-compose.yml

@@ -97,9 +97,7 @@ services:
     restart: unless-stopped
     networks:
       gitea_internal: {}
-      edge:
-        aliases:
-          - gitea.ginnoir.com
+      edge: {}
     environment:
       - USER_UID=1000
       - USER_GID=1000

stacks/proxy/docker-compose.yml

@@ -20,7 +20,9 @@ services:
     labels:
       - "com.centurylabs.watchtower.enable=false"
     networks:
-      - edge
+      edge:
+        aliases:
+          - gitea.ginnoir.com
     ports:
       - "80:80"
       - "443:443"