diff --git a/.gitignore b/.gitignore
index eaf169cb8..9a3d01c23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,7 +11,7 @@ Thumbs.db
 .idea/*
 plugins.local/*
 themes.local/*
-config.php
+/config.php
 feed-icons/*
 cache/*/*
 lock/*
diff --git a/classes/config.php b/classes/config.php
new file mode 100644
index 000000000..8a7470135
--- /dev/null
+++ b/classes/config.php
@@ -0,0 +1,98 @@
+<?php
+class Config {
+
+   const DB_TYPE = "DB_TYPE";
+   const DB_HOST = "DB_HOST";
+   const DB_USER = "DB_USER";
+   const DB_NAME = "DB_NAME";
+   const DB_PASS = "DB_PASS";
+   const DB_PORT = "DB_PORT";
+   const MYSQL_CHARSET = "MYSQL_CHARSET";
+   const SELF_URL_PATH = "SELF_URL_PATH";
+   const SINGLE_USER_MODE = "SINGLE_USER_MODE";
+   const SIMPLE_UPDATE_MODE = "SIMPLE_UPDATE_MODE";
+   const PHP_EXECUTABLE = "PHP_EXECUTABLE";
+   const LOCK_DIRECTORY = "LOCK_DIRECTORY";
+   const CACHE_DIR = "CACHE_DIR";
+   const ICONS_DIR = "ICONS_DIR";
+   const ICONS_URL = "ICONS_URL";
+   const AUTH_AUTO_CREATE = "AUTH_AUTO_CREATE";
+   const AUTH_AUTO_LOGIN = "AUTH_AUTO_LOGIN";
+   const FORCE_ARTICLE_PURGE = "FORCE_ARTICLE_PURGE";
+   const ENABLE_REGISTRATION = "ENABLE_REGISTRATION";
+   const SESSION_COOKIE_LIFETIME = "SESSION_COOKIE_LIFETIME";
+   const SMTP_FROM_NAME = "SMTP_FROM_NAME";
+   const SMTP_FROM_ADDRESS = "SMTP_FROM_ADDRESS";
+   const DIGEST_SUBJECT = "DIGEST_SUBJECT";
+   const CHECK_FOR_UPDATES = "CHECK_FOR_UPDATES";
+   const PLUGINS = "PLUGINS";
+   const LOG_DESTINATION = "LOG_DESTINATION";
+
+   private const _DEFAULTS = [
+      Config::DB_TYPE => "pgsql",
+      Config::DB_HOST => "db",
+      Config::DB_USER => "",
+      Config::DB_NAME => "",
+      Config::DB_PASS => "",
+      Config::DB_PORT => "5432",
+      Config::MYSQL_CHARSET => "UTF8",
+      Config::SELF_URL_PATH => "",
+      Config::SINGLE_USER_MODE => "",
+      Config::SIMPLE_UPDATE_MODE => "",
+      Config::PHP_EXECUTABLE => "/usr/bin/php",
+      Config::LOCK_DIRECTORY => "lock",
+      Config::CACHE_DIR => "cache",
+      Config::ICONS_DIR => "feed-icons",
+      Config::ICONS_URL => "feed-icons",
+      Config::AUTH_AUTO_CREATE => "true",
+      Config::AUTH_AUTO_LOGIN => "true",
+      Config::FORCE_ARTICLE_PURGE => 0,
+      Config::ENABLE_REGISTRATION => "",
+      Config::SESSION_COOKIE_LIFETIME => 86400,
+      Config::SMTP_FROM_NAME => "Tiny Tiny RSS",
+      Config::SMTP_FROM_ADDRESS => "noreply@localhost",
+      Config::DIGEST_SUBJECT => "[tt-rss] New headlines for last 24 hours",
+      Config::CHECK_FOR_UPDATES => "true",
+      Config::PLUGINS => "auth_internal",
+      Config::LOG_DESTINATION => "sql",
+   ];
+
+   private const _ENVVAR_PREFIX = "TTRSS_";
+   private static $instance;
+
+   private $params = [];
+
+   public static function get_instance() {
+		if (self::$instance == null)
+			self::$instance = new self();
+
+		return self::$instance;
+	}
+
+   function __construct() {
+      $ref = new ReflectionClass(get_class($this));
+
+      foreach ($ref->getConstants() as $const => $cvalue) {
+         if (strpos($const, "_") !== 0) {
+            $override = getenv($this::_ENVVAR_PREFIX . $const);
+
+            if (!empty($override)) {
+               $this->params[$cvalue] = $override;
+            } else {
+               $this->params[$cvalue] = $this::_DEFAULTS[$const];
+            }
+         }
+      }
+   }
+
+   private function _get($param) {
+      return $this->params[$param];
+   }
+
+   static function get($param) {
+      $instance = self::get_instance();
+
+      return $instance->_get($param);
+   }
+
+}
\ No newline at end of file