Nginx configuration for imgproxy https://imgproxy.net/

nginx.conf

  location @imgproxy {
        proxy_set_header Host localhost:8080;
            
        proxy_set_header If-Modified-Since "";
        proxy_set_header ETag "";
        proxy_set_header Cache-Control "";

        proxy_ignore_headers Cache-Control;
        proxy_ignore_headers Set-Cookie;
        proxy_ignore_headers Expires;
        proxy_ignore_headers X-Accel-Expires;

        proxy_cache_key $scheme$proxy_host$request_uri$webp_suffix;
        proxy_cache imgproxy;
        proxy_pass http://localhost:8080;
        expires max;
        rewrite ^.+$ /insecure/plain/$scheme://$http_host$uri$webp_suffix break;
    }

    location ~* ^.+\.(jpe?g|png|webp|avif|gif|ico|svg|heic|bmp|tiff) {
        # Redirect the 418 error to our imgproxy
        error_page 418 = @imgproxy;
        recursive_error_pages on;
        # Abort if the requested file does not exist
        if ( !-f $request_filename ) {
            break;
        }
        # Raise a 418 error if the request is not from our proxy.
        if ( $imgproxy != 1 ) {
            
            return 418;
        } 
    }