Example dockerfile with simplest possible python server

Dockerfile

FROM gliderlabs/alpine:3.4

ENV PORT 80

RUN apk-install python
ADD . /app
WORKDIR /app
CMD python /app/server.py
EXPOSE 80

server.py

#!/usr/bin/python
# This file is only provided as an example on how to organize your services.
# Delete it when starting to implement your service code.

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
import os

PORT = int(os.environ['PORT'])


class Handler(BaseHTTPRequestHandler):
    # Handler for the GET requests
    def do_GET(self):
        self.send_response(200)
        self.end_headers()
        self.wfile.write("Hello World!")
        return


server = HTTPServer(('', PORT), Handler)
print 'Started HTTP server on port', PORT
server.serve_forever()