codeinthehole/docker-osx-shared-folders.rst

## docker-osx-shared-folders.rst

      
        

                
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              docker-osx-shared-folders.rst
            
          
        
      
      
    How to share a folder with a docker container on OSX
Mounting shared folders between OSX and the docker container is tricky due to
the intermediate boot2docker VM. You can't use the usual docker -v option as
the docker server knows nothing about the OSX filesystem - it can only mount
folders from the boot2docker filesystem.  Fortunately, you can work around this
using SSHFS.
Install sshfs on the boot2docker machine:
$ boot2docker ssh
docker@boot2docker:~$ tce-load -wi sshfs-fuse

and create a folder to mount to:
docker@boot2docker:~$ mkdir ~/osx

Ensure that 'Remote Login' is enabled in 'System Preferences > Sharing' and make
a note of your host IP address.
Now run sshfs on the boot2docker VM to mount a folder from your host machine:
docker@boot2docker:~$ sudo sshfs $username@$ipaddress:/Users/$username/ /home/docker/osx/

replacing $username and $ipaddress as appropriate. You'll have to enter
your password.
Now you can run a docker container (using the docker client on your host machine) and mount a local folder (using the path
to it on the boot2docker VM),
eg:
$ docker run -it -v /home/docker/osx/somefolder:/opt/somefolder ubuntu bash

and any updates made within your local folder will be immediately visible within
the container.
Largely taken from the comments here:
boot2docker/boot2docker#188