Add Duplicati backup service and update Authelia configuration

- Add Duplicati encrypted cloud backup service
- Add AUTHELIA_DB_NAME and AUTHELIA_DB_USER environment variables
- Add DUPLICATI_ENCRYPTION_KEY and DUPLICATI_PASSWORD to .env.example
- Update README.md with Duplicati documentation
- Configure Gitea with English-only language setting

README.md

@@ -12,6 +12,7 @@ A production-ready Traefik-based reverse proxy gateway with automatic SSL/TLS, a
 - **Uptime Monitoring** with Uptime Kuma
 - **Server Monitoring** with Beszel
 - **Git Repository Hosting** with Gitea
+- **Encrypted Backups** with Duplicati
 - **Security Headers** and Flexible Routing
 - **Flexible Domain Routing** (subdomains, paths, custom rules)
 
@@ -30,6 +31,7 @@ Internet → Traefik (Port 80/443) → Authelia (Auth) → Internal Services (tr
 - **pgAdmin**: `pgadmin.${DOMAIN_PREFIX}.${DOMAIN}` - PostgreSQL administration
 - **Beszel**: `beszel.${DOMAIN_PREFIX}.${DOMAIN}` - Server monitoring
 - **Gitea**: `git.${DOMAIN_PREFIX}.${DOMAIN}` - Self-hosted Git service (SSH on port 222)
+- **Duplicati**: `backup.${DOMAIN_PREFIX}.${DOMAIN}` - Encrypted cloud backup
 
 ## 🛠️ Quick Start
 
@@ -69,6 +71,8 @@ UMAMI_DB_NAME=umami
 UMAMI_APP_SECRET=your_64_character_secret
 
 # Authelia secrets (generate with openssl rand -hex 32)
+AUTHELIA_DB_NAME=authelia
+AUTHELIA_DB_USER=authelia
 AUTHELIA_DB_PASSWORD=your_secure_password
 AUTHELIA_JWT_SECRET=your_64_char_secret
 AUTHELIA_SESSION_SECRET=your_64_char_secret
@@ -81,6 +85,10 @@ GITEA_DB_PASSWORD=your_secure_password
 GITEA_DB_NAME=gitea
 GITEA_SECRET_KEY=your_64_char_secret
 GITEA_INTERNAL_TOKEN=your_internal_token
+
+# Duplicati secrets
+DUPLICATI_ENCRYPTION_KEY=your_encryption_key
+DUPLICATI_PASSWORD=your_backup_password
 ```
 
 
@@ -98,6 +106,7 @@ docker compose up -d
 - **pgAdmin**: `https://pgadmin.${DOMAIN_PREFIX}.${DOMAIN}`
 - **Beszel**: `https://beszel.${DOMAIN_PREFIX}.${DOMAIN}`
 - **Gitea**: `https://git.${DOMAIN_PREFIX}.${DOMAIN}` (SSH: port 222)
+- **Duplicati**: `https://backup.${DOMAIN_PREFIX}.${DOMAIN}`
 
 ## 📋 Adding New Services