Add Windows Dockerfiles

docker/gcr/Dockerfile.windows.1803

@@ -0,0 +1,10 @@
+# escape=`
+FROM plugins/docker:windows-1803
+
+LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
+  org.label-schema.name="Drone GCR" `
+  org.label-schema.vendor="Drone.IO Community" `
+  org.label-schema.schema-version="1.0"
+
+ADD release/windows/amd64/drone-gcr.exe c:/bin/drone-gcr.exe
+ENTRYPOINT [ "C:\\bin\\drone-gcr.exe" ]

docker/gcr/Dockerfile.windows.1809

@@ -0,0 +1,10 @@
+# escape=`
+FROM plugins/docker:windows-1809
+
+LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
+  org.label-schema.name="Drone GCR" `
+  org.label-schema.vendor="Drone.IO Community" `
+  org.label-schema.schema-version="1.0"
+
+ADD release/windows/amd64/drone-gcr.exe c:/bin/drone-gcr.exe
+ENTRYPOINT [ "C:\\bin\\drone-gcr.exe" ]

docker/gcr/manifest.tmpl

@@ -23,3 +23,15 @@ manifests:
       architecture: arm
       os: linux
       variant: v7
+  -
+    image: plugins/gcr:{{#if build.tag}}{{trimPrefix build.tag "v"}}-{{/if}}windows-1803
+    platform:
+      architecture: amd64
+      os: windows
+      version: 1803
+  -
+    image: plugins/gcr:{{#if build.tag}}{{trimPrefix build.tag "v"}}-{{/if}}windows-1809
+    platform:
+      architecture: amd64
+      os: windows
+      version: 1809