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Docker for Mac

docker-for-mac.yml contains an example use of the open source components of Docker for Mac. The example has support for controlling dockerd from the host via vsudd and port forwarding with VPNKit. It requires HyperKit, VPNKit and a Docker client on the host to run. The easiest way to install these at the moment is to install a recent version of Docker for Mac.

To build it with the latest Docker CE:

$ linuxkit build -format iso-efi docker-for-mac.yml

To run the VM with a 4G disk:

linuxkit run hyperkit -networking=vpnkit -vsock-ports=2376 -disk size=4096M -data-file ./metadata.json -iso -uefi docker-for-mac-efi

Where the file ./metadata.json should contain the desired docker daemon configuration, for example:

{
  "docker": {
    "entries": {
      "daemon.json": {
        "content": "{\n  \"debug\" : true,\n  \"experimental\" : true\n}\n"
      }
    }
  }
}

In another terminal you should now be able to access docker via the socket guest.00000948 in the state directory (docker-for-mac-efi-state/ by default):

$ docker -H unix://docker-for-mac-efi-state/guest.00000948 ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES