Powershell script to run compose in a container.

This script assumes the typical environment that Windows users operate,
namely, VirtualBox running the boot2docker ISO, managed by
docker-machine. I wrote this script for my Windows using colleagues and
first placed it in the public domain as a gist:
https://gist.github.com/au-phiware/25213e72c80040f398ba
In short, that script works for me.

I have adapted that script to use the (yet to be) official image
(docker/compose:latest) and also added an extra environment variable to
provide additional options to docker run.

Signed-off-by: Corin Lawson <[email protected]>

script/run.ps1

@@ -0,0 +1,22 @@
+# Run docker-compose in a container via boot2docker.
+#
+# The current directory will be mirrored as a volume and additional
+# volumes (or any other options) can be mounted by using
+# $Env:DOCKER_COMPOSE_OPTIONS.
+
+if ($Env:DOCKER_COMPOSE_VERSION -eq $null -or $Env:DOCKER_COMPOSE_VERSION.Length -eq 0) {
+    $Env:DOCKER_COMPOSE_VERSION = "latest"
+}
+
+if ($Env:DOCKER_COMPOSE_OPTIONS -eq $null) {
+    $Env:DOCKER_COMPOSE_OPTIONS = ""
+}
+
+if (-not $Env:DOCKER_HOST) {
+    docker-machine env --shell=powershell default | Invoke-Expression
+    if (-not $?) { exit $LastExitCode }
+}
+
+$local="/$($PWD -replace '^(.):(.*)$', '"$1".ToLower()+"$2".Replace("\","/")' | Invoke-Expression)"
+docker run --rm -ti -v /var/run/docker.sock:/var/run/docker.sock -v "${local}:$local" -w "$local" $Env:DOCKER_COMPOSE_OPTIONS "docker/compose:$Env:DOCKER_COMPOSE_VERSION" $args
+exit $LastExitCode