This is a template projects for Flask framework.
docker build -t <myimage> .
Where <myimage> is the name of the image you desire to set to your new proyect.
Also, the ending . is related to the directory you are building against.
To run the image into a container, you'll run it with the command:
docker run -d --name <mycontainer> -p 80:80 <myimage>
The -d is to run the container on detach mode, just the opposite of interactive mode, so the console will return the control to the user.
The --name mycontainer is to tag the container with an human-friendly name to make it more recognizable.
The -p 80:80 is to map the inner port 80 (into the container - right part) to the port 80 onto the host machine - the left part.
Finally, the <myimage> is the name of the image we've created early on this example.