Shared folder in Docker. With Windows. Not only “C/user/” path

Question

I\'m new to Docker, I come from Vagrant.

I\'m using Docker (1.9.1) inside my \"D:/Works/something/DockerFirstTime\" folder.

Now I create the machine with

Answer 1

I know that Docker only shares the /c/User/folder, is that right?

It does, and it is able to do so because the VirtualBox VM used for providing a Linux host for docker is sharing C:\Users.

For docker to see another folder, you would need to:

• use VBoxmanage sharedfolder add "VM name" --name "sharename" --hostpath "D:\Works"

• then mount /D/Works within a VM session, as mentioned in "share windows folder (other than c/Users/) with docker container (using docker windows client)", and mentioned in boot2docker:

  mount -t vboxsf -o uid=1000,gid=50 sharename /some/mount/location
  

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The issue with that last alternative is described in " Introduction to boot2docker" (scroll down to the "Shared folders" section)

The main issue with vboxsf is that it does not do any sort of caching sort of caching so when you are attempting to share a large amount of small files (big git repo’s) or anything that is filesystem read heavy (grunt) performance becomes a factor.

The best solution I have come up with so far is using vagrant with a customized version of boot2docker with NFS support enabled, which has very little “hacking” to get working which is nice.
And a good enough selling point for me is the speed increase by using NFS instead of vboxsf, it’s pretty staggering actually.

This is the project that I have been using https://vagrantcloud.com/yungsang/boxes/boot2docker.

The magic sauce in the volume sharing is in this line.

config.vm.synced_folder ".", "/vagrant", type: "nfs"

Which tells Vagrant to share your current directory in to the boot2docker VM in the /vagrant directory, using NFS.

However, that project seems quite old and would need to be adapted in order to include the latest boot2docker.iso (docker 1.9.1).