adding Dockerfile and Readme

README.md

@@ -12,7 +12,7 @@ Set the following volumes with the -v tag.
 
 | Volume-Name | Container mount | Description |
 | ----------- | --------------- | ----------- |
-| app		  | /flask/app		| directory for flask application |
+| app		  | /flask		| directory for flask application |
 
 ## Ports
 
@@ -24,4 +24,4 @@ Set the following volumes with the -p tag.
 
 ## Example run-command
 
-``` docker run --name flask -v flask:/flask/app --restart unless-stopped -d -p 80:5000 tiynger/pythonflask ```
+``` docker run --name flask -v flask:/flask --restart unless-stopped -d -p 80:5000 tiynger/pythonflask ```