What’s the best way to share files from Windows to Boot2docker VM?

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Boot2Docker is a small Linux VM running on VirtualBox. So before you can use your files (from Windows) in Docker (which is running in this VM), you must first share your code with the Boot2Docker VM itself.

To do so, you mount your Windows folder to the VM when it is shutdown (here a VM name of default is assumed):

C:/Program Files/Oracle/VirtualBox/VBoxManage sharedfolder \
add default -name win_share -hostpath c:/work

(Alternatively you can also open the VirtualBox UI and mount the folder to your VM just as you did in your screenshot!)

Now ssh into the Boot2Docker VM for the Docker Quickstart Terminal:

docker-machine ssh default

Then perform the mount:

  1. Make a folder inside the VM: sudo mkdir /VM_share
  2. Mount the Windows folder to it: sudo mount -t vboxsf win_share /VM_share

After that, you can access C:/work inside your Boot2Docker VM:

cd /VM_share

Now that your code is present inside your VM, you can use it with Docker, either by mounting it as a volume to the container:

docker-machine ssh default
docker run --volume /VM_share:/folder/in/container some/image

Or by using it while building your Docker image:

...
ADD /my_windows_folder /folder
...

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