Introduction to docker
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A brief introduction to docker. Demo: Run Bottle, a simple python web framework, in a docker container
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Introduction to docker
- 1. Introduction to Docker Willy Kuo Feb 25, 2013
- 2. About Me • About me • Work at numerinfo.com • Organizor of http://www.meetup.com/Docker-Taipei/ • https://github.com/waitingkuo • waitinguo0527@gmail.com
- 4. The Matrix From Hell
- 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. Deploy to almost anywhere OK Soon Soon ?
- 13. Installation • Natively (Linux) http://docs.docker.io/en/latest/installation/ #installation-list • Boot2Docker (Linux, OSX) https://github.com/boot2docker/boot2docker • Vagrant https://github.com/waitingkuo/docker-vagrant
- 14. Play Docker via Vagrant • Install vagrant & virtualbox • $ git clone https://github.com/waitingkuo/dockervagrant.git $ cd docker-vagrant $ vagrant up $ vagrant ssh • Start to play docker
- 15. Download a pre-built image • $ docker pull ubuntu • You can find more images here https://index.docker.io/
- 16. Docker Images? • $ docker images
- 17. Run Something… • $ docker run ubuntu echo hi • $ docker run ubuntu uname -a • $ docker run ubuntu ifconfig
- 18. How about running bash? • $ docker run ubuntu bash • oops • $ docker run -i -t ubuntu bash
- 19. Let’s install something • $ docker run ubuntu apt-get install -y python-pip • Try to install something via pip • $ docker run ubuntu pip install bottle • Where’s my pip?
- 20. docker ps • $ docker ps • Nothing … • $ docker -a • Too much … • $ docker ps -l • That’s it
- 21. Think about Git • Coding… • $ git add -A • $ git commit -m ‘xxx’
- 22. Commit!!? • $ docker commit <container-id> mypip • Now, you have a new image called mypip • $ docker images
- 23. Finally, you can use pip • $ docker run mypip pip install bottle • $ docker commit <container-id> mybottle
- 24. Time to run a web server • Run a simple website using bottle framework • https://github.com/waitingkuo/bottle-sample
- 25. Clone our project! • First, we need git • $ docker run mybottle apt-get install git-core • uuuh… Seems we need to do apt-get update
- 26. Apt-get update and install again • $ docker run mybottle apt-get update • $ docker commit <container-id> myupdate • $ docker run myupdate apt-get install git-core • $ docker commit <container-id> mygit
- 27. Clone our project part 2 • $ docker run mygit git clone https://github.com/ waitingkuo/bottle-sample.git • docker commit <container-id> myweb
- 28. Bottle Rock • $ docker run myweb python bottle-sample/app.py • htttp://192.168.66.66:8080 (192.168.66.66 is the ip for the virtual machine we create by vagrant) • What the fuckrock??
- 29. Port forwarding • $ docker run -p 9999:8080 myweb python bottlesample/app.py
- 30. Daemonize? • $ docker run -p 9999:8080 myweb python bottlesample/app.py • Now, our web server is running in the background • $ docker ps
- 31. Can we kill it? • just like the kill command, except that we should assign the container id instead of pid • $ docker kill <container-id>
- 33. Example Dockerfile • FROM ubuntu RUN apt-get update RUN apt-get install -y git-core RUN apt-get install -y python-pip RUN pip install bottle RUN git clone https://github.com/waitingkuo/bottle-sample.git CMD python bottle-sample/app.py
- 34. Build image by Dockerfile • $ docker built -t myweb-2 . # don’t forget the . • Now, you have a new image, myweb-2 • $ docker image • $ docker run -p 9999:8080 myweb-2 python bottlesample/app.py
- 35. Think about GitHub • We have already had docker commit • Can I push my image to something like GitHub?
- 36. Docker Index • https://index.docker.io/ • The place to find Docker container images • Can automatically create Docker Image from your project on Github, and keep them in sync
- 37. The basics of the Docker System
- 39. Example Deploy Mongodb • https://index.docker.io/u/waitingkuo/mongodb/ • The Dockfile is hosted on Github https://github.com/waitingkuo/dockerfiles/blob/ master/dockerfiles/mongodb/Dockerfile • $ docker run -d -p 27017:27017 -p 28017:28017 waitingkuo/mongodb • Mongodb is running http://192.168.66.66:28017/
- 43. Thank you!