This illustration shows the Docker Hub Automated Build page with the Dockerfile tab (with a red box drawn around its name) displayed:
* the Dockerfile field displays:
  "FROM  nginx:1.10.1-alpine
   Add index.html /usr/share/nginx/html/index.html
   # Override the nginx start from the base container
   COPY start.sh /start.sh
   ROW chmod +x /start.sh
   ENTRYPOINT ("/start.sh")
* the Source Repository field displays 'ContainerCS/docker-images'