Docker intro
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Docker allows users to containerize processes and run them anywhere. It provides lightweight virtualization, separation of concerns, and portability. Key Docker concepts include images, containers, repositories, and Dockerfiles used to build images. Images can be built locally or pulled from registries. Containers can link to share resources and volumes can be used for persistent storage. Docker has a growing ecosystem of tools for clustering, service discovery, and PaaS platforms.
![Dockerfile
FROM ubuntu:14.04
RUN apt-get update
RUN apt-get -y install redis-server
EXPOSE 6379
ENTRYPOINT ["/usr/bin/redis-server"]](https://image.slidesharecdn.com/dockerintro-140526033401-phpapp01/85/Docker-intro-6-320.jpg)
Docker intro
- 1. Docker - Let’s get started Timo Derstappen @teemow
- 2. Who is using Docker? ● played with it? ● on a daily basis? ● in production?
- 3. Docker ● Containerize your processes ● Lightweight and fast ● WYSIWG ● Separation of concerns ● Portable
- 4. Docker Terminology ● Image ● Tag ● Repository ● Layer ● Container
- 5. Docker Technology ● LXC ● AUFS/BTRFS ● Go
- 6. Dockerfile FROM ubuntu:14.04 RUN apt-get update RUN apt-get -y install redis-server EXPOSE 6379 ENTRYPOINT ["/usr/bin/redis-server"]
- 7. Build and push docker build -t teemow/redis . docker push teemow/redis
- 8. Run and Link Containers docker run -d --name redis teemow/redis docker run --link redis:db -i -t ubuntu:14.04 /bin/bash $ apt install redis-tools $ redis-cli -h $DB_PORT_6379_TCP_ADDR
- 9. Docker Volumes # bind mount docker run -v /data/redis:/data redis
- 10. Docker Volumes # data container docker run -v /data --name DATA busybox true docker run --rm --volumes-from DATA --name v1 ubuntu docker run --rm --volumes-from v1 --name v2 ubuntu
- 11. Docker Index ● Index hosts docker repositories ● Public repositories to share with others ● Private repositories with team collaboration ● Trusted Builds ● Hooks
- 12. Ecosystem ● etcd, fleet ● consul, vulcand ● flynn, deis ● fig, dokku ● tsuru, project atomic Just to name a few...
- 13. Some recommendations ● Containers ≠ Machines ● less moving parts in a container is better ● Design to fail ● Throw your Mac away! ;)