Fix homepage Traefik network routing and update configurations

- Add traefik.docker.network=traefik-network label to homepage service
- Prevent Traefik from using wrong IP from homelab-network
- Resolve 504 Gateway Timeout issues after authentication
- Update various docker-compose configurations and templates
- Clean up unused configuration files

docker-compose/core/authelia/users_database.yml.template

@@ -3,10 +3,11 @@
 ###############################################################
 
 users:
-  kelin:
-    displayname: "Admin User"
-    password: "$argon2id$v=19$m=65536,t=3,p=4$a+3pIrywP/li9wy9J6UkMA$+3THyJiAnS/gNYnLaYtlsRCaYfgnnxsUyGZ4D3xGnUg"
+  ${DEFAULT_USER}:
+    displayname: "Administrator"
+    password: "${DEFAULT_PASSWORD_HASH}"  # Generate with: docker run authelia/authelia:latest authelia crypto hash generate pbkdf2 --password 'yourpassword'
     email: ${DEFAULT_EMAIL}
     groups:
       - admins
       - users
+      - users