Docker Compose mount Windows folder

Question

I am using Docker Toolbox in Windows and am trying to mount a Windows folder in a docker-compose.yml file like this:

nginx:
  image: nginx:latest
  container_name: test_server
  ports:
    - "80:80"
  volumes:
    - /sss:/c/data/www:ro
  environment:
    - VIRTUAL_HOST=test.local

My objective is to mount C:\data\www to the boot2docker VM image which is already created by Docker Toolbox and then from there to the nginx container inside of it.

Unfortunately it's not working. I get a folder sss inside the boot2docker image, but it's empty without targeting to my Windows data.

What am I doing wrong? Is there a better practice in order to use Docker on Windows while you are developing (so you need to share code between Windows, the Docker VM (boot2docker) and Docker containers)?

Answer 1

My objective is to Mount C:\data\www to boot2docker VM image

From "Manually sharing directory as docker volume mounting point":

You need to:

• modify your VirtualBox VM (make sure it is stopped first):

  VBoxManage sharedfolder add <machine name/id> --name <mount_name> --hostpath <host_dir> --automount
  # in your case
  /c/Program\ Files/Oracle/VirtualBox/VBoxManage.exe sharedfolder add default --name www --hostpath 'C:\data\ww' --automount
  

• add an automount to your boot2docker VM:

  • Edit/create (as root) /mnt/sda1/var/lib/boot2docker/bootlocal.sh, (sda1 may be different for you)

  • Add

    mkdir -p <local_dir>
    mount -t vboxsf -o defaults,uid=`id -u docker`,gid=`id -g docker` <mount_name> <local_dir
    

(you might have to add the umask as in here)