diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..06b8ae2
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,31 @@
+version: '3.3'
+
+# docker-compose -f docker-compose.yml up db adminer app
+
+services:
+
+  db:
+    image: postgres:11-alpine
+    environment:
+      POSTGRES_PASSWORD: example
+      POSTGRES_DB: foo
+    volumes:
+      - ./mocked-db-table-users.sql:/docker-entrypoint-initdb.d/mocked-db-table-users.sql:ro
+    ports:
+      - 5432:5432/tcp
+
+  adminer:
+    image: adminer
+    ports:
+      - 8081:8080/tcp
+
+  app:
+    build:
+      dockerfile: php73.Dockerfile
+      context: ./
+    ports:
+      - 80:80/tcp
+    volumes:
+      - ./:/var/www/html:ro
+      - ./etc/register.ini:/etc/matrix-register/register.ini:ro
+      #docker run --rm -it --name php7.3 -p 80:80/tcp -v "$PWD":/var/www/html:ro -v "$PWD"/etc/register.ini:/etc/matrix-register/register.ini:ro php7.3:local
diff --git a/lib/base.php b/lib/base.php
index ff5bde0..61d6a27 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -109,5 +109,3 @@ class BaseClass {
 
 }
 
-
-?>
diff --git a/lib/db.php b/lib/db.php
index 1dcd1ab..d95673c 100644
--- a/lib/db.php
+++ b/lib/db.php
@@ -24,7 +24,7 @@ function testDriver(): bool
     return true;
 }
 
-function getDatabase(&$config, $log): Database {
+function getDatabase(Config $config, Logger $log): Database {
 
     /**
      * Erstellt ein Datenbank Objekt und gibt dieses zurück. Im Fehlerfall
@@ -49,7 +49,7 @@ class Connection {
 
     private static $conn;
 
-    public function connect(&$config)
+    public function connect(Config $config): PDO
     {
 
         $driver = $config->getDbDriver();
@@ -79,7 +79,7 @@ class Connection {
         return $pdo;
     }
 
-    public static function get()
+    public static function get(): self
     {
         if (null === static::$conn)
         {
@@ -183,7 +183,8 @@ class Database {
          */
 
         $this->log->n("Try to create table requests");
-        if ($this->pdo->driver === "PDO_PGSQL") {
+        $driverName = $this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME);
+        if ($driverName === "pgsql") {
             $stmt = "CREATE TABLE IF NOT EXISTS requests (
                     id serial PRIMARY KEY,
                     nick varchar(80) NOT NULL UNIQUE,
@@ -191,7 +192,7 @@ class Database {
                     token char(32) NOT NULL UNIQUE,
                     ip bytea,
                     time integer NOT NULL);";
-        } else if ($this->pdo->driver === "PDO_PSQLITE") {
+        } else if ($driverName === "sqlite") {
             // ungetestet
             $stmt = "CREATE TABLE IF NOT EXISTS request (
                     id INTEGER PRIMARY KEY AUTOINCREMENT,
@@ -200,16 +201,23 @@ class Database {
                     token TEXT NOT NULL UNIQUE,
                     ip BLOB,
                     time INTEGER NOT NULL);";
+        } else {
+            $stmt = '';
         }
-        try {
-            $this->pdo->exec($stmt);
-        } catch (PDOException $e) {
-            $this->log->e("Failed to create table requests");
-            $this->log->e("Error: {$e->getMessage()}");
-            return false;
+        if ($stmt) {
+            try {
+                $response = $this->pdo->exec($stmt);
+            } catch (PDOException $e) {
+                $this->log->e("Failed to create table requests");
+                $this->log->e("Error: {$e->getMessage()}");
+                return false;
+            }
+            if ($response !== false) {
+                $this->log->n("Table requests successfull created");
+            }
+            $this->log->n("Could not create table requests");
         }
-        $this->log->n("Table requests successfull created");
-        return true;
+        return false;
     }
 
 
diff --git a/mocked-db-table-users.sql b/mocked-db-table-users.sql
new file mode 100644
index 0000000..236ea12
--- /dev/null
+++ b/mocked-db-table-users.sql
@@ -0,0 +1,5 @@
+CREATE TABLE users (
+    "name" character varying(30) NOT NULL,
+    "id" serial NOT NULL,
+    PRIMARY KEY ("id")
+);
diff --git a/php73.Dockerfile b/php73.Dockerfile
new file mode 100644
index 0000000..ec8cf8f
--- /dev/null
+++ b/php73.Dockerfile
@@ -0,0 +1,14 @@
+FROM php:7.3-apache
+
+# docker run --rm -it --name php7.3 -p 80:80/tcp -v "$PWD":/var/www/html:ro -v "$PWD"/etc/register.ini:/etc/matrix-register/register.ini:ro php:7.3-apache
+
+RUN apt-get update && apt-get install -y libpq-dev \
+    && docker-php-ext-configure pgsql -with-pgsql=/usr/local/pgsql \
+    && docker-php-ext-install pdo pdo_pgsql pgsql \
+    && apt clean
+
+# docker build --rm --file=php73.Dockerfile -t php7.3:local ./
+
+# docker run --rm -it --name php7.3 -p 80:80/tcp -v "$PWD":/var/www/html:ro -v "$PWD"/etc/register.ini:/etc/matrix-register/register.ini:ro php:7.3-apache bash
+# docker run --rm -it --name php7.3 -p 80:80/tcp -v "$PWD":/var/www/html:ro -v "$PWD"/etc/register.ini:/etc/matrix-register/register.ini:ro php7.3:local
+