Updated doc about entrypoint and make it optional and fixed some env vars

Author: wiliamsouza

Dockerfile

@@ -35,8 +35,8 @@ RUN apt-get install -y python3.3
 ENV PROJECT myproject
 
 # Source
-ADD . /srv/${PROJECT}
-RUN cd /srv/${PROJECT}
+ADD . /srv/$PROJECT
+RUN cd /srv/$PROJECT
 
 # Virtual environment
 # Uncomment the following line to run inside a venv.
@@ -58,6 +58,6 @@ EXPOSE 8000
 
 RUN chmod +x /srv/$PROJECT/entrypoint.py
 
-# Change this to point to your entrypoint.
-ENTRYPOINT ["/srv/myproject/entrypoint.py"]
-CMD ["--help"]
+# Uncomment the following line to your container behave like a binary. 
+#ENTRYPOINT ["/srv/<project>/entrypoint.py"]
+#CMD ["--help"]

README.md

@@ -30,9 +30,9 @@ it in `Dockerfile` environment variable `PROJECT`.
 Entrypoint
 ----------
 
-You have the option to let your dockerized application behave like a binary
-to do that just put your start code in `entrypoint.py` and it will take care
-to initialize your application when you run:
+You have the option to let your dockerized application behave like a binary,
+to do that just edit and uncomment the last lines `Dockerfile`, so it will
+take care to run your application when you call:
 
     $ sudo docker run wiliamsouza/python