An introduction for the Docker Cologne Meetup.

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! ;)