For example, we could start an nginx container that serves files from the host using a volume.

Now theres a new thing, Docker Toolbox, that makes it super easy.

Or you can read it if you want, I think its a pretty good blog post and youll learn some stuff.

Even my dads like, whats Docker I saw someone twitter about it on the Facebook.

It has the potential to change all aspects of server-side applications, from development and testing to deployment and scaling.

After a certain point, the book assumes youre using Linux and skips some of the extra configuration required to make the examples work on OS X.

This isnt the books fault; rather, it speaks to underlying issues with how Docker works on OS X.

Its not meant to be a tutorial on Docker itself, but I encourage you to follow along and type in all the commands.

Plus, if you decide to dig deeper into Docker on your Mac, youll be saved hours of troubleshooting.

The Docker server is a daemon that does all the heavy lifting: building and downloading images, starting and stopping containers, and the like.

You will interact with Docker by using the client to send commands to the server.

The host can be any machineyour laptop, a server in the Cloud, etcbut, because Docker uses features only available to Linux, that machine must be running Linux (more specifically, the Linux kernel).

It doesnt have the kernel features required to run Docker containers natively.

This also means boot2docker, not OS X, is the Docker host, not OS X.

I prefer homebrew because I like to manage my environment from the command line.

We need to tell it to use our boot2docker VM by setting the DOCKERHOST environment variable.

You probably want to add that environment variable to your shell config.

The VM runs the Docker server, and were communicating with it using the Docker client on OS X.

If we were on Linux, our Docker host would be localhost, but we arent, so its not.

Its our VM.

The (boot2docker ip) subcommand captures standard output but not standard error, which still goes to the terminal.

If youre only using one VM, it should always get the same IP, but if youre VMing on the reg, it could change.

Soon, inception. You should really just use the VMs IP address mmkay.

Volumes are one way to give your container access to resources in the outside world.

Docker Volumes For Mac Os X