Aggiunta cache al caricamento delle immagini

file/api/v1/img/index.php

@@ -35,6 +35,11 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
             $imageData = curl_exec($downloadImg);
             $contentType = curl_getinfo($downloadImg, CURLINFO_CONTENT_TYPE);
             header("Content-Type: " . $contentType);
+
+            $etag = md5($imageData);
+            header("ETag: \"$etag\"");
+            header("Cache-Control: public, max-age=604800");
+
             echo $imageData;
         } else {
             header("Content-Type: image/png");

file/style.css

@@ -148,6 +148,7 @@ header .container {
 
 footer .container {
     padding: 2rem 0;
+    padding-top: 4rem;
     text-align: center;
     opacity: 0.8;
     font-size: 90%;