Docker on Debian

• Packages installed: debootstrap and friends.
• I use Debian testing/jessie (now stable), and put sid into sources.list so I can apt-get install docker.io, because docker.io removed from testing in late March 2015 and available only in sid.

  # vim /etc/apt/sources.list

  deb http://yourrepo/debian/ sid main

• Update your packages list.

  # apt-get update

• Install docker.io with:

  # apt-get install docker.io

• Use mkimage.sh to create Docker image.

  $ sudo /usr/share/docker.io/contrib/mkimage.sh -t ${USER}/minbase debootstrap --variant=minbase --components=main --include=inetutils-ping,inetutils-traceroute,iproute jessie http://yourrepo/debian/

• Try to run 'echo':

  $ sudo docker run -it ${USER}/minbase echo "hello citra"

  or bash shell:

  $ sudo docker run -it ${USER}/minbase /bin/bash

• Firstly, create a dockerfile for your container.

  $ vim dockerfile

  FROM stwn/minbase
  MAINTAINER stwn@NOSPAMduniasemu.org
  
  RUN apt-get update && apt-get install -y \
      apt-utils less sudo screen \
      openssh-server openssh-client \
      asterisk

• Build docker container based on the dockerfile.

  # docker build -t ${USER}/asterisk:test0 - < dockerfile

• Restart docker service with systemd:

  # systemctl restart docker.service

• Show images:

  # docker images
  REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
  stwn/minbase        latest              d816657c5182        3 minutes ago       123.7 MB
  scratch             latest              511136ea3c5a        22 months ago       0 B

• Remove image:

  # docker rmi [IMAGE ID]

• Commit change:

  # docker commit [IMAGE ID] ${USER}/asterisk:test1

• Show all running containers:

  # docker ps -a

• Remove container:

  # docker rm [CONTAINER ID]

There is a network interface named docker0 when we run Docker engine. This interface connected as a (virtual Ethernet) bridge to containers inside Docker and configured with private ip address/network.