nginx optimization doc

Web-Servers/Nginx/06-File-Server.md

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+### 📄 **NGINX File Server Configuration**
+
+This configuration sets up an NGINX server to serve files from two different directories:
+
+* `/srv/files` for general file browsing at the root path (`/`)
+* `/srv/images` for image browsing at `/image`
+
+```nginx
+server {
+    # Define the domain name for this server block
+    server_name domain;
+
+    # Default root directory for the server
+    root /srv/files;
+
+    # Serve files and list directory contents at the root URL (e.g., http://domain/)
+    location / {
+        autoindex on;  # Enables directory listing
+    }
+
+    # Serve images and list contents at /image (e.g., http://domain/image/)
+    location /image {
+        autoindex on;            # Enables directory listing
+        root /srv/images;        # Note: this overrides the global root
+                                 # Final path served will be /srv/images/image/ due to how root works
+    }
+}
+```
+
+---
+
+### ⚠️ **Important Notes**
+
+1. **Path Behavior**:
+
+   * In the `/image` block, using `root` adds the location path (`/image`) to the end. So `http://domain/image/` will map to `/srv/images/image/`.
+   * If you want `/image/` to map directly to `/srv/images/`, use `alias` instead:
+
+     ```nginx
+     location /image/ {
+         autoindex on;
+         alias /srv/images/;
+     }
+     ```
+
+2. **Security**:
+
+   * Be cautious when enabling `autoindex`; it exposes directory contents to the public.
+   * Consider restricting access or adding authentication for sensitive directories.
+
+3. **Permissions**:
+
+   * Ensure the NGINX user (usually `www-data`) has read access to the directories.
+