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Introduction to docker
The document is an introductory guide to Docker, detailing its purpose as a shipping container system for code and contrasting it with virtual machines. It outlines the installation process, basic commands, and usage examples, such as deploying applications and managing images. Additionally, it highlights the Docker ecosystem, including various tools for deployment and continuous integration.
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Introduction to docker
- 1. Introduction to Docker WillyKuo Feb 25, 2013
- 2. About Me • About me • Workat numerinfo.com • Organizor of http://www.meetup.com/Docker-Taipei/ • https://github.com/waitingkuo • waitinguo0527@gmail.com
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- 4. The Matrix FromHell
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- 6. The Matrix FromHell
- 7. Solution: Intermodal ShippingContainer
- 8. Docker is ashipping container system for code
- 9. Docker eliminates thematrix from hell
- 10. Deploy to almostanywhere OK Soon Soon ?
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- 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 viaVagrant • 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-builtimage • $ docker pull ubuntu • You can find more images here https://index.docker.io/
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- 17. Run Something… • $ dockerrun ubuntu echo hi • $ docker run ubuntu uname -a • $ docker run ubuntu ifconfig
- 18. How about runningbash? • $ 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 • $ dockerps • 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 canuse pip • $ docker run mypip pip install bottle • $ docker commit <container-id> mybottle
- 24. Time to runa 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 installagain • $ 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 projectpart 2 • $ docker run mygit git clone https://github.com/ waitingkuo/bottle-sample.git • docker commit <container-id> myweb
- 28. Bottle Rock • $ dockerrun 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 • $ dockerrun -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 killit? • just like the kill command, except that we should assign the container id instead of pid • $ docker kill <container-id>
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- 33. Example Dockerfile • FROM ubuntu RUNapt-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 byDockerfile • $ 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 • Wehave already had docker commit • Can I push my image to something like GitHub?
- 36. Docker Index • https://index.docker.io/ • The placeto find Docker container images • Can automatically create Docker Image from your project on Github, and keep them in sync
- 37. The basics ofthe Docker System
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- 39. Example Deploy Mongodb • https://index.docker.io/u/waitingkuo/mongodb/ • TheDockfile 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/
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