diff --git a/Dockerfile b/Dockerfile
index 228583e..533fa93 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,9 @@
 FROM alpine:latest
 WORKDIR /emqtt
-COPY runner.py requirements.txt ./
+COPY requirements.txt ./
+RUN apk add --no-cache python3 py3-pip && pip3 install -r requirements.txt
+COPY runner.py ./
 COPY emqtt ./emqtt
 COPY tests ./tests
-RUN apk add --no-cache python3 && pip3 install -r requirements.txt
 EXPOSE 1025
 CMD ["python3", "runner.py"]
diff --git a/runner.py b/runner.py
index 86412dc..5f7fc6c 100755
--- a/runner.py
+++ b/runner.py
@@ -38,10 +38,10 @@
 
     loop = asyncio.get_event_loop()
     c = Controller(
-        emqtt.EMQTTHandler(loop, config), 
-        loop, 
-        config['SMTP_LISTEN_ADDRESS'], 
-        config['SMTP_PORT']
+        handler=emqtt.EMQTTHandler(loop, config),
+        loop=loop,
+        hostname=config['SMTP_LISTEN_ADDRESS'],
+        port=config['SMTP_PORT']
     )
     
     c.start()