Initial Blinko Cloudron package

- CloudronManifest.json with PostgreSQL and localstorage addons
- Dockerfile based on cloudron/base:5.0.0
- NGINX reverse proxy configuration
- Supervisor process management
- Initialization script with auto-configuration

nginx.conf

@@ -0,0 +1,85 @@
+daemon off;
+worker_processes auto;
+pid /run/nginx.pid;
+error_log stderr;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    include /etc/nginx/mime.types;
+    default_type application/octet-stream;
+
+    access_log /dev/stdout;
+    error_log stderr;
+
+    sendfile on;
+    tcp_nopush on;
+    tcp_nodelay on;
+    keepalive_timeout 65;
+    types_hash_max_size 2048;
+    client_max_body_size 50M;
+
+    # Gzip compression
+    gzip on;
+    gzip_vary on;
+    gzip_proxied any;
+    gzip_comp_level 6;
+    gzip_types text/plain text/css text/xml application/json application/javascript application/xml application/xml+rss text/javascript application/x-javascript image/svg+xml;
+
+    upstream blinko {
+        server 127.0.0.1:1111;
+        keepalive 32;
+    }
+
+    server {
+        listen 8000;
+        server_name _;
+
+        # Health check endpoint
+        location /health {
+            access_log off;
+            return 200 'OK';
+            add_header Content-Type text/plain;
+        }
+
+        # Proxy all requests to Blinko
+        location / {
+            proxy_pass http://blinko;
+            proxy_http_version 1.1;
+
+            proxy_set_header Host $host;
+            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;
+
+            # WebSocket support
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+
+            proxy_buffering off;
+            proxy_cache off;
+
+            # Timeouts for long-running requests
+            proxy_connect_timeout 60s;
+            proxy_send_timeout 300s;
+            proxy_read_timeout 300s;
+        }
+
+        # Static files with caching
+        location /_next/static/ {
+            proxy_pass http://blinko;
+            proxy_http_version 1.1;
+
+            proxy_set_header Host $host;
+            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;
+
+            expires 7d;
+            add_header Cache-Control "public, immutable";
+        }
+    }
+}