I have heard docker for long time. Today I listen presentation, then try to setup docker in OS X environment. Here's the step of installation.

1. Download Boot2Docker, then install pkg
2. Open Boot2Docker in Application
   

   bash
   unset DYLD_LIBRARY_PATH ; unset LD_LIBRARY_PATH
   mkdir -p ~/.boot2docker
   if [ ! -f ~/.boot2docker/boot2docker.iso ]; then cp /usr/local/share/boot2docker/boot2docker.iso ~/.boot2docker/ ; fi
   /usr/local/bin/boot2docker init 
   /usr/local/bin/boot2docker up 
   $(/usr/local/bin/boot2docker shellinit)
   docker version
   Last login: Thu Mar  5 19:08:10 on console
   MacBook-Pro:~ joezine$ bash
   bash-3.2$ unset DYLD_LIBRARY_PATH ; unset LD_LIBRARY_PATH
   bash-3.2$ mkdir -p ~/.boot2docker
   bash-3.2$ if [ ! -f ~/.boot2docker/boot2docker.iso ]; then cp /usr/local/share/boot2docker/boot2docker.iso ~/.boot2docker/ ; fi
   bash-3.2$ /usr/local/bin/boot2docker init 
   Generating public/private rsa key pair.
   Your identification has been saved in /Users/joezine/.ssh/id_boot2docker.
   Your public key has been saved in /Users/joezine/.ssh/id_boot2docker.pub.
   The key fingerprint is:
   55:2d:82:f3:01:e6:25:71:5b:1f:91:75:95:36:57:bb joezine@MacBook-Pro
   The key's randomart image is:
   +--[ RSA 2048]----+
   |        =+o o.o+O|
   |       oo+o+..o=+|
   |        .ooo .o.o|
   |         ..     .|
   |        S      E |
   |                 |
   |                 |
   |                 |
   |                 |
   +-----------------+
   /usr/local/bin/boot2docker up 
   $(/usr/local/bin/boot2docker shellinit)
   docker version
   
   
   
   bash-3.2$ /usr/local/bin/boot2docker up 
   Waiting for VM and Docker daemon to start...
   ........................ooooooooooooooooooooooo
   Started.
   Writing /Users/joezine/.boot2docker/certs/boot2docker-vm/ca.pem
   Writing /Users/joezine/.boot2docker/certs/boot2docker-vm/cert.pem
   Writing /Users/joezine/.boot2docker/certs/boot2docker-vm/key.pem
   
   To connect the Docker client to the Docker daemon, please set:
       export DOCKER_HOST=tcp://192.168.59.103:2376
       export DOCKER_CERT_PATH=/Users/joezine/.boot2docker/certs/boot2docker-vm
       export DOCKER_TLS_VERIFY=1
   
   bash-3.2$ $(/usr/local/bin/boot2docker shellinit)
   Writing /Users/joezine/.boot2docker/certs/boot2docker-vm/ca.pem
   Writing /Users/joezine/.boot2docker/certs/boot2docker-vm/cert.pem
   Writing /Users/joezine/.boot2docker/certs/boot2docker-vm/key.pem
   bash-3.2$ docker version
   Client version: 1.5.0
   Client API version: 1.17
   Go version (client): go1.4.1
   Git commit (client): a8a31ef
   OS/Arch (client): darwin/amd64
   Server version: 1.5.0
   Server API version: 1.17
   Go version (server): go1.4.1
   Git commit (server): a8a31ef

3. You may download image from Docker's repository by using this command
   

    docker pull centos:7

4. Try to run "docker run hello-world"
   

   bash-3.2$ docker run hello-world
   Hello from Docker.
   This message shows that your installation appears to be working correctly.
   
   To generate this message, Docker took the following steps:
    1. The Docker client contacted the Docker daemon.
    2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
       (Assuming it was not already locally available.)
    3. The Docker daemon created a new container from that image which runs the
       executable that produces the output you are currently reading.
    4. The Docker daemon streamed that output to the Docker client, which sent it
       to your terminal.
   
   To try something more ambitious, you can run an Ubuntu container with:
    $ docker run -it ubuntu bash
   
   For more examples and ideas, visit:
    http://docs.docker.com/userguide/

I just know that Docker built in GO