docker.txt

app.py
--------------------
from flask import Flask
import subprocess
app = Flask(__name__)

# mostra a aplicação no "/"
@app.route("/")
def hello():
    return "<h1 style='color:green'> ae!!!</h1>"

# retorna user: user
# Uso:
# http://ip:80/user/lucas
@app.route('/user/<username>')
def show_user_profile(username):
    return "<marquee> User: %s</marquee>" % username

# retorna post, somente aceitando numeros "int:"
@app.route('/post/<int:post_id>')
def show_post(post_id):
    return 'Post %d' % post_id

# retorna o hostname onde ele foi executado,
# util para testar o funcionamento do cluster
@app.route("/host")
def host():
    cmd = [ "hostname"]
    p = subprocess.Popen(cmd, stdout = subprocess.PIPE,
                              stderr = subprocess.PIPE,
                              stdin = subprocess.PIPE)
    out,err = p.communicate()
    return out

if __name__ == "__main__":
    app.run()

--------
server.py

from app import app

# Import CherryPy
import cherrypy

if __name__ == '__main__':

    # Mount the application
    cherrypy.tree.graft(app, "/")

    # Unsubscribe the default server
    cherrypy.server.unsubscribe()

    # Instantiate a new server object
    server = cherrypy._cpserver.Server()

    # Configure the server object
    server.socket_host = "0.0.0.0"
    server.socket_port = 80
    server.thread_pool = 30

    # For SSL Support
    # server.ssl_module            = 'pyopenssl'
    # server.ssl_certificate       = 'ssl/certificate.crt'
    # server.ssl_private_key       = 'ssl/private.key'
    # server.ssl_certificate_chain = 'ssl/bundle.crt'

    # Subscribe this server
    server.subscribe()

    # Start the server engine (Option 1 *and* 2)

    cherrypy.engine.start()
    cherrypy.engine.block()

---------

Dockerfile:
FROM centos

RUN yum -y install python python-devel python-setuptools flask epel-release  && yum install -y python-pip && \
 pip install cherrypy flask && mkdir -p /app && yum clean all

ADD . /app

EXPOSE 80

#ENTRYPOINT ["python", "/app/server.py"]
CMD ["python", "/app/server.py"]

-----
to install:
yum install vim wget dialog net-tools -y
yum install -y python python-devel python-setuptools flask
yum install epel-release
yum install python-pip
pip install cherrypy
pip install flask

# só ser feliz executando:
python server.py