This document summarizes a workshop on using Docker for Python development on Azure. It introduces Docker as a way to package code and dependencies to be deployed as a container. It then walks through steps to create an Azure VM with Docker Machine, build a Python web app and Docker image, and deploy the containerized app to Azure using Docker and Docker Compose. The workshop aims to demonstrate how Docker can improve deployment processes for Python apps on Azure.

1. Azure Workshop
Docker for Python Developer
Wei-Ting Kuo

2. What is Docker?

3. The Challenge

4. The Matrix From Hell

5. Cargo Transport Pre-1960

6. The Matrix From Hell

7. Solution:
Intermodal Shipping Container

8. Docker is a shipping
container system for code

9. Docker eliminates the matrix
from hell

10. Workshop Steps
• Use Docker-Machine to create VM on Azure
• Build your Python web app
• Build Docker Image and deploy to Azure by
Docker
• Improve deployment process by Docker-Compose

11. Step1
Use Docker-Machine to Create VM
• 1. Download your publish setting file
• 2. Install Docker & Docker Machine
• 3. Use Docker-Machine to create a virtual machine
on Azure

12. Download PublishSettings
• Install Azure command line tool:
Source: https://github.com/azure/azure-xplat-cli
Windows: http://go.microsoft.com/fwlink/?linkid=254279
Mac: http://go.microsoft.com/fwlink/?Linkid=252249
Linux: http://go.microsoft.com/fwlink/?linkid=253472
• Download your publishsettings file
$ azure account download

13. Install Docker (Mac)
• Document
https://docs.docker.com/installation/mac/
• https://github.com/boot2docker/osx-installer/
releases/latest

14. Install Docker (Linux)
• Document
https://docs.docker.com/installation/ubuntulinux/
• $ sudo apt-get update $ sudo apt-get install wget
$ wget -qO- https://get.docker.com/ | sh

15. Install Docker (Windows)
• Document
https://docs.docker.com/installation/windows/
• Installer
https://github.com/boot2docker/windows-installer/
releases/latest

16. Check
• $ docker

17. Install Docker Machine
(Mac & Linux)
• Document
https://docs.docker.com/machine/
• Install
$ curl -L https://github.com/docker/machine/releases/download/v0.2.0/
docker-machine_darwin-amd64 > /usr/local/bin/docker-machine
$ chmod +x /usr/local/bin/docker-machine

18. Install Docker Machine
(Windows)
• Document
https://docs.docker.com/machine/
• Install openssl
http://gnuwin32.sourceforge.net/packages/openssl.htm
• Install Docker Machine
$ curl -L https://github.com/docker/machine/releases/download/v0.2.0/
docker-machine_windows-amd64.exe > /bin/docker-machine

19. Create a Virtual Machine on
Azure (with Docker)
• Create a Machine on Azure with Docker
$ docker-machine create -d azure --azure-publish-settings-file PUBLISH-
SETTING-FILE A-VERY-UNIQUE-NAME
• Setup docker environment to connect to your new
instance
$ eval `docker-machine env A-VERY-UNIQUE-NAME`

20. VM vs Container

21. Docker

22. VM vs Container

23. Demo
• Some basic Docker commands
• docker info
docker pull ubuntu
docker run ubuntu ls
docker images
docker ps

24. Step 2
Build Your Python Web App
• 1. Add requirements.txt
• 2. Build a very simple python web app
• 3. Write a Dockerfile
• 4. build the image
• 5. Deploy it to Azure

25. Sample Codes
• Please git clone this repo
$ git clone https://github.com/waitingkuo/pyconapac2015-azure-workshop

26. Add requirements
• Add “flask” and “redis” in “requirements.txt”
flask
redis

27. A simple Python Web App

28. Dockerfile

29. Build the image
• Build the image
$ docker build -t myapp .
• List your images
$ docker images

30. Deploy to Azure
• Run redis first
$ docker run -d --name myredis redis
• Check status
$ docker ps
• Run your web app
$ docker run -d -p 80:5000 --link myredis:redis myapp
• Check status
$ docker ps

31. Add a Endpoint for your VM
• https://portal.azure.com/

38. Connect to your server
• http://YOUR-MACHINE-NAME.cloudapp.net
• mine is http://pyconapac2015-azure.cloudapp.net

39. docker-compose
• 1. Install docker-compose
• 2. Write a docker-compose.yml
• 3. Deploy !

40. Install docker-compose
• $ pip install docker-compose

41. docker-compose.yml
• myweb:
build: .
links:
- myredis
ports
- 80:5000
myredis:
image: redis

42. Deploy!
• $ docker-compose up

43. Q & A