automated-office/config/nginx/sites-available/nextcloud

upstream nextcloud_upstream {
    server 172.19.0.3:80;  # Die IP wird später durch die tatsächliche Container-IP ersetzt
}

server {
    listen 80;
    server_name cloud.mrx8086.com;
    
    # Redirect HTTP to HTTPS
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    server_name cloud.mrx8086.com;

    # SSL Configuration
    ssl_certificate /etc/nginx/ssl/mrx8086.com/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/mrx8086.com/privkey.pem;
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    # Modern SSL configuration
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;

    # Security headers
    add_header X-Content-Type-Options nosniff always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header X-Frame-Options SAMEORIGIN always;
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    
    # Content Security Policy für Nextcloud
    add_header Content-Security-Policy "frame-ancestors 'self'; default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; font-src 'self' data:; connect-src 'self'; media-src 'self';" always;

    # Proxy settings
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-Host $host;
    proxy_set_header X-Forwarded-Port 443;
    proxy_set_header Host $host;
    proxy_http_version 1.1;

    # Nextcloud specific settings
    client_max_body_size 512M;
    fastcgi_buffers 64 4K;
    
    # Root location
    location / {
        proxy_pass http://nextcloud_upstream;
        
        # WebSocket support
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        
        # Timeouts
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    # Block sensitive paths
    location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)(?:$|/) {
        deny all;
        return 404;
    }

    # Deny access to hidden files
    location ~ /\. {
        deny all;
        return 404;
    }
}