diff --git a/index.php b/index.php
index 123f6ecd..69071aa2 100644
--- a/index.php
+++ b/index.php
@@ -8,8 +8,8 @@ require_once __DIR__ . '/lib/bootstrap.php';
 
 Configuration::verifyInstallation();
 $customConfig = [];
-if (file_exists(__DIR__ . '/config.ini.php')) {
-    $customConfig = parse_ini_file(__DIR__ . '/config.ini.php', true, INI_SCANNER_TYPED);
+if (file_exists(getenv('RSSBRIDGE_DATA') . '/config.ini.php')) {
+    $customConfig = parse_ini_file(getenv('RSSBRIDGE_DATA') . '/config.ini.php', true, INI_SCANNER_TYPED);
 }
 Configuration::loadConfiguration($customConfig, getenv());
 
diff --git a/lib/Configuration.php b/lib/Configuration.php
index d699178f..5431f345 100644
--- a/lib/Configuration.php
+++ b/lib/Configuration.php
@@ -91,9 +91,8 @@ final class Configuration
                 self::setConfig('system', 'debug_mode_whitelist', explode("\n", str_replace("\r", '', $debug)));
             }
         }
-
-        if (file_exists(__DIR__ . '/../whitelist.txt')) {
-            $enabledBridges = trim(file_get_contents(__DIR__ . '/../whitelist.txt'));
+        if (file_exists(getenv('RSSBRIDGE_DATA') . '/whitelist.txt')) {
+            $enabledBridges = trim(file_get_contents(getenv('RSSBRIDGE_DATA') . '/whitelist.txt'));
             if ($enabledBridges === '*') {
                 self::setConfig('system', 'enabled_bridges', ['*']);
             } else {
diff --git a/lib/bootstrap.php b/lib/bootstrap.php
index a95de9dd..78153a65 100644
--- a/lib/bootstrap.php
+++ b/lib/bootstrap.php
@@ -7,7 +7,7 @@ const PATH_LIB_FORMATS = __DIR__ . '/../formats/';
 const PATH_LIB_CACHES = __DIR__ . '/../caches/';
 
 /** Path to the cache folder */
-const PATH_CACHE = __DIR__ . '/../cache/';
+define('PATH_CACHE', getenv('RSSBRIDGE_DATA') . '/cache/');
 
 /** URL to the RSS-Bridge repository */
 const REPOSITORY = 'https://github.com/RSS-Bridge/rss-bridge/';