enable windows 1809 builds

.drone.yml

@@ -39,6 +39,44 @@ trigger:
   - "refs/tags/**"
   - "refs/pull/**"
 
+---
+kind: pipeline
+type: ssh
+name: windows-1809-amd64-docker
+
+platform:
+  os: windows
+
+server:
+  host: windows.1809.amd64.plugins.drone.ci
+  password:
+    from_secret: windows_password
+  user:
+    from_secret: windows_username
+
+steps:
+- name: build
+  commands:
+  # TODO use the new DRONE_SEMVER_SHORT environment variables to
+  # publish docker images for tag events.
+  - go build -o release/windows/amd64/drone-docker.exe
+  - docker login -u $env:USERNAME -p $env:PASSWORD
+  - docker build -f docker/Dockerfile.windows.1809 -t plugins/docker:windows-1809-amd64 .
+  - docker push plugins/docker:windows-1809-amd64
+  environment:
+    CGO_ENABLED: "0"
+    USERNAME:
+      from_secret: docker_username
+    PASSWORD:
+      from_secret: docker_password
+
+trigger:
+  event:
+  - push
+
+depends_on:
+- testing
+
 ---
 kind: pipeline
 name: linux-amd64-docker
@@ -326,6 +364,7 @@ trigger:
   - "refs/tags/**"
 
 depends_on:
+- windows-amd64-docker
 - linux-amd64-docker
 - linux-arm64-docker
 - linux-arm-docker

docker/docker/manifest.tmpl

@@ -30,8 +30,14 @@ manifests:
       os: windows
       version: 1803
   -
-    image: plugins/docker:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-1809
+    image: plugins/docker:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-1809-amd64
     platform:
       architecture: amd64
       os: windows
       version: 1809
+  -
+    image: plugins/docker:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}windows-1903-amd64
+    platform:
+      architecture: amd64
+      os: windows
+      version: 1903