Add Imagick and Iconv to PHP image

.gitea/workflows/container.yml

@@ -74,7 +74,7 @@ jobs:
               httpd -k stop
             '
           docker run --rm --entrypoint php "${IMAGE}:${COMMIT_SHA}" -r '
-            foreach (["exif", "gd", "intl", "Zend OPcache", "pgsql", "pdo_pgsql"] as $extension) {
+            foreach (["exif", "gd", "iconv", "imagick", "intl", "Zend OPcache", "pgsql", "pdo_pgsql"] as $extension) {
                 if (!extension_loaded($extension)) {
                     fwrite(STDERR, "Missing PHP extension: {$extension}\n");
                     exit(1);
@@ -93,7 +93,19 @@ jobs:
                 fwrite(STDERR, "GD resize smoke test failed.\n");
                 exit(1);
             }
+            $imagick = new Imagick();
+            $imagick->newImage(8, 8, "white", "png");
+            $imagick->resizeImage(4, 4, Imagick::FILTER_LANCZOS, 1);
+            if ($imagick->getImageWidth() !== 4 || $imagick->getImageHeight() !== 4) {
+                fwrite(STDERR, "Imagick resize smoke test failed.\n");
+                exit(1);
+            }
+            if (iconv("UTF-8", "ASCII//TRANSLIT", "Grüße") === false) {
+                fwrite(STDERR, "Iconv smoke test failed.\n");
+                exit(1);
+            }
             echo "GD resize smoke test passed.\n";
+            echo "Imagick and Iconv smoke tests passed.\n";
           '
 
       - name: Determine version tag