diff --git a/app.py b/app.py
index ebb495458d..c0f3d87d8a 100644
--- a/app.py
+++ b/app.py
@@ -8,6 +8,7 @@ def hello():
     return "Hello World!"
 
 if __name__ == '__main__':
-    port = int(os.environ.get('FLASK_PORT')) or 8080
+    port = os.environ.get('FLASK_PORT') or 8080
+    port = int(port)
 
     app.run(port=port,host='0.0.0.0')
\ No newline at end of file
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 4e1e68b803..6b9bccf7bd 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:slim
+FROM quay.io/devfile/python:slim
 
 # By default, listen on port 8081
 EXPOSE 8081/tcp