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Contents
  1. 1. Install Docker
    1. 1.1. Install Docker for Ubuntu
  2. 2. Manage Docker as a non-root user
  3. 3. Create docker image(interact on ubuntu16.04)
  4. 4. Create docker image(by dockerfile)
  5. 5. TODO
  6. 6. Reference

Docker

Install Docker

  • Docker has two editions: Community Edition(CE) and Enterprise Edition(EE)
  • CE also has two update channels, stable and edge:
    • Stable: gives you reliable updates every quarter
    • Edge: gives you new features every month

Install Docker for Ubuntu

  • Reference

  • Remove old version

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    sudo apt-get remove docker docker-engine docker.io

  • Install packages

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    sudo apt-get install apt-transport-https ca-certificates curl software-properties-common

  • Add official GPG key:

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    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
    • Verify that the key fingerprint is 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88.
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      sudo apt-key fingerprint 0EBFCD88

      pub   4096R/0EBFCD88 2017-02-22
            Key fingerprint = 9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
            uid                  Docker Release (CE deb) <docker@docker.com>
            sub   4096R/F273FCD8 2017-02-22

  • setup stable repository for amd64

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    sudo add-apt-repository \
       "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
       $(lsb_release -cs) \
       stable"

  • Install docker CE

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    sudo apt-get update
    sudo apt-get install docker-ce

  • Verify docker by hello-world

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    sudo docker run hello-world

Manage Docker as a non-root user

  • Reference:

  • Create docker group

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    sudo groupadd docker

  • Add you to the docker group

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    sudo usermod -aG docker $USER

  • Log out and log back in again to evaluate your group membership

  • Verify docker without sudo

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    docker run hello-world

Create docker image(interact on ubuntu16.04)

  • Get the target image

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    docker pull ubuntu:16.04

  • Run a container (if you haven’t pulled the image, it will be downloaded now)

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    $ docker run -it ubuntu:16.04 /bin/bash

    -i --interactive	enter interactive container
    -t --tty		allocate a pseudo-TTY

  • Modify the container

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    root@cb62d48c0687:/# echo "echo hello-world" > hello.sh
    root@cb62d48c0687:/# chmod +x hello.sh 
    root@cb62d48c0687:/# ./hello.sh 
    hello-world

    (DON'T exit now)

  • Check the running container

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    $ docker ps -a | head -n2
    CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                        PORTS               NAMES
    cb62d48c0687        ubuntu:16.04        "/bin/bash"              5 minutes ago       Up 5 minutes                                      silly_payne

  • Commit the container as image

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    $ docker commit -m "hello-world" -a "zjunwei" cb62d48c0687 hello-u1604:v1
    sha256:be522fe570cccbcd391dfdc24c15e3e28e5951df29489ce02a9aefcbaaf8a260

  • Find the image

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    $ docker images
    REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
    hello-u1604         v1                  be522fe570cc        2 minutes ago       120MB

  • Run as interactive

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    $ docker run -ti hello-u1604:v1

  • Run the image directly

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    $ docker run hello-u1604:v1 echo abc
    abc

Create docker image(by dockerfile)

  • Create dockerfile as below

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    FROM ubuntu:16.04
    MAINTAINER zjunwei

    ADD echo.sh /
    ENTRYPOINT ["/echo.sh"]
    CMD ["This is test for docker hello"]

  • Prepare echo.sh

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    #!/bin/bash
    echo "hello from zjunwei"

  • Build the image name:tag

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    $ docker build . -t zjunwei/hello:v1

    Sending build context to Docker daemon  123.6MB
    Step 1/5 : FROM ubuntu:16.04
     ---> 14f60031763d
    Step 2/5 : MAINTAINER zjunwei
     ---> Using cache
     ---> 143d818b2089
    Step 3/5 : ADD echo.sh /
     ---> Using cache
     ---> ae6348251dee
    Step 4/5 : ENTRYPOINT /echo.sh
     ---> Using cache
     ---> f54009ef8c37
    Step 5/5 : CMD This is test for docker hello
     ---> Using cache
     ---> 522f17f278d7
    Successfully built 522f17f278d7
    Successfully tagged zjunwei/hello:v1

  • Find the image

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    $ docker images

    REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
    zjunwei/hello       v1                  522f17f278d7        6 minutes ago       120MB

  • Run the image (Not support interactive way)

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    $ docker run zjunwei/hello:v1

    hello from zjunwei

TODO

Reference

Contents
  1. 1. Install Docker
    1. 1.1. Install Docker for Ubuntu
  2. 2. Manage Docker as a non-root user
  3. 3. Create docker image(interact on ubuntu16.04)
  4. 4. Create docker image(by dockerfile)
  5. 5. TODO
  6. 6. Reference