page_title: Installation on Mac OS X page_description: Instructions for installing Docker on OS X using boot2docker. page_keywords: Docker, Docker documentation, requirements, boot2docker, VirtualBox, SSH, Linux, OSX, OS X, Mac # Installing Docker on Mac OS X > **Note:** > Docker is supported on Mac OS X 10.6 "Snow Leopard" or newer. Because the Docker Engine uses Linux-specific kernel features, you'll need to use a lightweight virtual machine (VM) to run it on OS X. You use the OS X Docker client to control the virtualized Docker Engine to build, run, and manage Docker containers. To make this process easier, we've built a helper application called [Boot2Docker](https://github.com/boot2docker/boot2docker) that installs a virtual machine (using VirtualBox) that's all set up to run the Docker daemon. ## Demonstration ## Installation 1. Download the latest release of the [Docker for OS X Installer]( https://github.com/boot2docker/osx-installer/releases) (Look for the green Boot2Docker-x.x.x.pkg button near the bottom of the page.) 2. Run the installer by double-clicking the downloaded package, which will install a VirtualBox VM, Docker itself, and the Boot2Docker management tool. ![](/installation/images/osx-installer.png) 3. Locate the `Boot2Docker` app in your `Applications` folder and run it. Or, you can initialize Boot2Docker from the command line by running: $ boot2docker init $ boot2docker start $ export DOCKER_HOST=tcp://$(boot2docker ip 2>/dev/null):2375 A terminal window will open and you'll see the virtual machine starting up. Once you have an initialized virtual machine, you can control it with `boot2docker stop` and `boot2docker start`. > **Note:** > If you see a message in the terminal that looks something like this: > > `To connect the Docker client to the Docker daemon, please set: export DOCKER_HOST=tcp://192.168.59.103:2375` > you can safely set the evironment variable as instructed. View the [Boot2Docker ReadMe](https://github.com/boot2docker/boot2docker/blob/master/README.md) for more information. ## Upgrading 1. Download the latest release of the [Docker for OS X Installer]( https://github.com/boot2docker/osx-installer/releases) 2. If Boot2Docker is currently running, stop it with `boot2docker stop`. Then, run the installer package, which will update Docker and the Boot2Docker management tool. 3. To complete the upgrade, you also need to update your existing virtual machine. Open a terminal window and run: $ boot2docker stop $ boot2docker download $ boot2docker start This will download an .iso image containing a fresh VM and start it up. Your upgrade is complete. You can test it by following the directions below. ## Running Docker From your terminal, you can test that Docker is running with our small `hello-world` example image: Start the vm (`boot2docker start`) and then run: $ docker run hello-world This should download the `hello-world` image, which then creates a small container with an executable that prints a brief `Hello from Docker.` message. ## Container port redirection The latest version of `boot2docker` sets up a host-only network adaptor which provides access to the container's ports. If you run a container with an exposed port, $ docker run --rm -i -t -p 80:80 nginx then you should be able to access that Nginx server using the IP address reported by: $ boot2docker ip Typically, it is 192.168.59.103:2375, but VirtualBox's DHCP implementation might change this address in the future. # Further details If you are curious, the username for the boot2docker default user is `docker` and the password is `tcuser`. The Boot2Docker management tool provides several additional commands for working with the VM and Docker: $ ./boot2docker Usage: ./boot2docker [] {help|init|up|ssh|save|down|poweroff|reset|restart|config|status|info|ip|delete|download|version} [] Continue with the [User Guide](/userguide/). For further information or to report issues, please visit the [Boot2Docker site](http://boot2docker.io).