diff --git a/Dockerfile b/Dockerfile
index 444ed1b221264c2d8eb80251e0e3d54d8b7593ce..7a5b6be4a655b0db550244b300d4d588f2e8008e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,12 @@
-FROM k8r.eu/justjanne/php:latest
+FROM trafex/php-nginx:latest
+
+USER root
 
 RUN apk add --no-cache --update \
-    php-json \
-    php-pdo_sqlite \
-    php-pdo_pgsql
+    php82-json \
+    php82-pdo_sqlite \
+    php82-pdo_pgsql
 
 USER nobody
 
-ADD . /var/www/html/
\ No newline at end of file
+ADD . /var/www/html/
diff --git a/database/Config.php b/database/Config.php
index 7df6c1eeaa81881f3744dc12a3da900272c23bd1..6d5070fa7c563f7a8923a887262abed0999ef92f 100644
--- a/database/Config.php
+++ b/database/Config.php
@@ -20,7 +20,7 @@ class Config
         $this->database_connector = $database_connector;
         $this->username = $username;
         $this->password = $password;
-        $this->path_prefix = $path_prefix;
+        $this->path_prefix = rtrim($path_prefix, "/");
         $this->backend = $backend;
         $this->database_options = $options;
         $this->enable_ranking = $enable_ranking;
diff --git a/database/backends/PostgresSmartBackend.php b/database/backends/PostgresSmartBackend.php
index 89b2c032d27e2212741ac0df58d25817d64fa2c9..def896323d9aee31a950d450d55ff0427de380f7 100644
--- a/database/backends/PostgresSmartBackend.php
+++ b/database/backends/PostgresSmartBackend.php
@@ -35,12 +35,19 @@ class PostgresSmartBackend implements Backend
 
     function rankingParameters(): array
     {
-        return [
-            ":config_normalization",
-            ":weight_content",
-            ":weight_type",
-            ":weight_time"
-        ];
+        if ($this->enable_ranking) {
+            return [
+                ":config_normalization",
+                ":weight_content",
+                ":weight_type",
+                ":weight_time"
+            ];
+        } else {
+            return [
+                ":weight_type",
+                ":weight_time"
+            ];
+        }
     }
 
     private function rankingFunction(): string