Docker quick start guide on Mac

Docker is an open-source project that automates the deployment of applications inside software containers. Here is Docker quick start guide on Mac.

1. Install docker toolbox by downloading them from Docker toolbox site.
2. Once installed open docker quick start terminal by searching it from Mac launchpad.
   You may see a new bash shell with something like this:
   

   ##         .
                     ## ## ##        ==
                  ## ## ## ## ##    ===
              /"""""""""""""""""\___/ ===
         ~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ /  ===- ~~~
              \______ o           __/
                \    \         __/
                 \____\_______/
   
   
   docker is configured to use the default machine with IP 192.168.99.100
   For help getting started, check out the docs at https://docs.docker.com
   $ 

3. Check docker info
   

   $ docker info
   Containers: 6
   Images: 18
   Server Version: 1.9.1
   Storage Driver: aufs
    Root Dir: /mnt/sda1/var/lib/docker/aufs
    Backing Filesystem: extfs
    Dirs: 30
    Dirperm1 Supported: true
   Execution Driver: native-0.2
   Logging Driver: json-file
   Kernel Version: 4.1.13-boot2docker
   Operating System: Boot2Docker 1.9.1 (TCL 6.4.1); master : cef800b - Fri Nov 20 19:33:59 UTC 2015
   CPUs: 1
   Total Memory: 1.956 GiB
   Name: default
   ID: FESO:CVJC:IZ2V:XTMM:HHCT:AWBE:OUFA:WTCS:6VOZ:IT35:QQR3:RTNW
   Debug mode (server): true
    File Descriptors: 21
    Goroutines: 38
    System Time: 2016-01-25T06:37:31.858289467Z
    EventsListeners: 0
    Init SHA1: 
    Init Path: /usr/local/bin/docker
    Docker Root Dir: /mnt/sda1/var/lib/docker
   Labels:
    provider=virtualbox

4. Get default VM IP

   $ docker-machine ip default
   192.168.99.100
   

5. List all docker machines

   $ docker-machine ls
   NAME      ACTIVE   URL          STATE     URL                         SWARM   DOCKER   ERRORS
   default   *        virtualbox   Running   tcp://192.168.99.100:2376           v1.9.1  
   

6. Download ubuntu image

   $ sudo docker pull ubuntu
   Using default tag: latest
   latest: Pulling from library/ubuntu
   Digest: sha256:457b05828bdb5dcc044d93d042863fba3f2158ae249a6db5ae3934307c757c54
   Status: Image is up to date for ubuntu:latest
   

7. Run interactive shell on ubuntu image and create a container named ubuntu1

   $ docker run -it --name ubuntu1 ubuntu /bin/bash
   root@2641c6ddab9f:/# ls
   bin  boot  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
   

   To detach tty without existing shell, use Ctrl-p + Ctrl-q. Otherwise use Ctrl-d.

   To attach it again use

   docker attach [container_id_or_name]
   

8. List containers

   $ docker ps  #running containers
   $ docker ps -a  #all containers
   

9. Start/stop containers

   $ docker stop [container_id_or_name]  # stop container
   $ docker rm [container_id_or_name]  # remove container
   $ docker start [container_id_or_name] #start container
   $ docker restart [container_id_or_name] #restart container
   $ docker kill [container_id_or_name] #kill signal to container
   

10. Print docker env variables

    $ docker-machine env default
    export DOCKER_TLS_VERIFY="1"
    export DOCKER_HOST="tcp://192.168.99.100:2376"
    export DOCKER_CERT_PATH="/Users/user1/.docker/machine/machines/default"
    export DOCKER_MACHINE_NAME="default"
    # Run this command to configure your shell: 
    # eval $(docker-machine env default)
    

    Note that you can run the following from any shell terminal to setup docker env (instead of running docker quick start terminal)

    $ eval $(docker-machine env default)