Adding lcow and docker-nigthly. Currently this enables docker on windows without vms (#2216)

docker-nightly.json

@@ -0,0 +1,62 @@
+{
+    "homepage": "https://master.dockerproject.org",
+    "version": "nightly",
+    "description": "Run the latest master build of docker client and engine",
+    "url": "https://master.dockerproject.org/windows/x86_64/docker.zip",
+    "extract_dir": "docker",
+    "depends": [
+        "sudo",
+        "lcow"
+    ],
+    "suggest": {
+        "Linux container support on Windows": [
+            "lcow"
+        ],
+        "Docker Compose": [
+            "docker-compose"
+        ],
+        "Docker Machine": [
+            "docker-machine"
+        ],
+        "Kubernetes Standalone": [
+            "minikube"
+        ],
+        "Kubernetes Client": [
+            "kubectl"
+        ],
+        "compose.yml to kubernetes.yml": [
+            "kompose"
+        ]
+    },
+    "bin": [
+        "dockerd.exe",
+        "docker.exe"
+    ],
+    "notes": [
+        "Make sure to have container features enabled (will need a restart afterwards):",
+        "sudo Enable-WindowsOptionalFeature -Online -FeatureName containers -All -NoRestart",
+        "sudo Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V -All -NoRestart",
+        "",
+        "To test run you can use:",
+        "sudo dockerd -D --experimental -H \"npipe:////./pipe//docker_lcow\"",
+        "",
+        "To install and run as a service (with linux containers support - lcow):",
+        "You do not have to create a docker group you can replace it with (whoami)",
+        "",
+        "sudo net localgroup docker /add",
+        "sudo net localgroup docker (whoami) /add",
+        "sudo dockerd.exe `",
+        "  --register-service `",
+        "  --experimental `",
+        "  --storage-opt lcow.kirdpath=\"$(scoop prefix lcow)\" `",
+        "  -G docker",
+        "sudo Start-Service docker",
+        "",
+        "To remove the service you can use:",
+        "sudo Stop-Service docker",
+        "sudo powershell",
+        "(gwmi win32_service -filter \"name='docker'\").delete()",
+        "",
+        "For help, see https://docs.microsoft.com/en-us/virtualization/windowscontainers/manage-docker/configure-docker-daemon"
+    ]
+}

lcow.json

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+{
+    "homepage": "https://github.com/linuxkit/lcow",
+    "license": "Apache-2.0",
+    "version": "4.14.29-0aea33bc",
+    "url": "https://github.com/linuxkit/lcow/releases/download/4.14.29-0aea33bc/release.zip",
+    "hash": "5687be10447757cc0eb04a91b4dec3e296bf980200923fe806755d5fbb1a03fa",
+    "checkver": {
+        "url": "https://github.com/linuxkit/lcow/releases/latest",
+        "re": "/releases/tag/(?:v)?([\\d.]+-\\w+)"
+    },
+    "autoupdate": {
+        "url": "https://github.com/linuxkit/lcow/releases/download/$version/release.zip",
+        "hash": {
+            "url": "https://github.com/linuxkit/lcow/releases/tag/$version"
+        }
+    }
+}