add starlark script [ci skip]

.drone.starlark

@@ -0,0 +1,130 @@
+# this starlark script should be used to generate the .drone.yml
+# configuration file.
+
+def main(ctx):
+  # TODO consider running unit tests before building and
+  # publishing docker images.
+  before = {}
+
+  stages = [
+    linux('arm'),
+    linux('arm64'),
+    linux('amd64'),
+    windows('1903'),
+    windows('1809'),
+  ]
+
+  after = manifest()
+
+  # the after stage should only execute after all previous
+  # stages complete. this builds the dependency graph.
+  for stage in stages:
+    after['depends_on'].append(stage['name'])
+
+  return stages + [ after ]
+
+# create a pipeline stage responsible for building and
+# publishing the Docker image on linux.
+def linux(arch):
+  return {
+    'kind': 'pipeline',
+    'type': 'docker',
+    'name': 'linux-%s' % arch,
+    'platform': {
+      'os': 'linux',
+      'arch': arch,
+    },
+    'steps': [
+      {
+        'name': 'build',
+        'image': 'golang:1.10',
+        'commands': [
+          'cd posix',
+          'tar -xf fixtures.tar -C /',
+          'go test -v',
+        ],
+      },
+      {
+        'name': 'publish',
+        'image': 'plugins/docker',
+        'settings': {
+          'auto_tag': 'true',
+          'auto_tag_suffix': 'linux-%s' % arch,
+          'dockerfile': 'docker/Dockerfile.linux.%s' % arch,
+          'password': { 
+            'from_secret': 'docker_password',
+          },
+          'repo': 'drone/git',
+          'username': 'drone',
+        },
+        'when': {
+          'event': ['push', 'tag']
+        }
+      }
+    ]
+  }
+
+# create a pipeline stage responsible for building and
+# publishing the Docker image on windows. The windows stage
+# uses an ssh runner, as opposed to a docker runner.
+def windows(version):
+  return {
+    'kind': 'pipeline',
+    'type': 'ssh',
+    'name': 'windows-%s-amd64' % version,
+    'platform': {
+      'os': 'windows'
+    },
+    'server': {
+      'host':     { 'from_secret': 'windows_server_%s' % version },
+      'user':     { 'from_secret': 'windows_username' },
+      'password': { 'from_secret': 'windows_password' },
+    },
+    'steps': [
+      {
+        'name': 'build',
+        'environment': {
+          'USERNAME': { 'from_secret': 'docker_username' },
+          'PASSWORD': { 'from_secret': 'docker_password' },
+        },
+        # TODO these commands build and publish the latest
+        # docker tag regardless of git tag.
+        'commands': [
+          'docker login -u $env:USERNAME -p $env:PASSWORD',
+          'docker build -f docker/Dockerfile.windows.%s -t drone/git:windows-%s-amd64 .' % (version, version),
+          'docker push drone/git:windows-%s-amd64' % version,
+        ],
+      },
+    ],
+    'trigger': {
+      'event': ['push']
+    }
+  }
+
+# create a pipeline stage responsible for creating and
+# publishing a docker manifest to the registry.
+def manifest():
+  return {
+    'kind': 'pipeline',
+    'type': 'docker',
+    'name': 'manifest',
+    'steps': [
+      {
+        'name': 'manifest',
+        'image': 'plugins/manifest',
+        'settings': {
+          'auto_tag': 'true',
+          'username': 'drone',
+          'password': {
+            'from_secret': 'docker_password'
+          },
+          'spec': 'docker/manifest.tmpl',
+          'ignore_missing': 'true',
+        },
+      },
+    ],
+    'depends_on': [],
+    'trigger': {
+      'event': ['push', 'tag']
+    }
+  }

.drone.windows.jsonnet

@@ -1,74 +0,0 @@
-local windows_pipe = '\\\\\\\\.\\\\pipe\\\\docker_engine';
-local windows_pipe_volume = 'docker_pipe';
-local versions = [
-  //'1803',
-  '1809',
-];
-local trigger = {
-  ref: [
-    'refs/heads/master',
-    'refs/tags/**',
-  ],
-};
-local pipeline_name(version) = 'Windows ' + version;
-
-local pipeline(version, arch) = {
-  kind: 'pipeline',
-  name: pipeline_name(version),
-
-  platform: {
-    os: 'windows',
-    arch: arch,
-    version: version,
-  },
-
-  steps: [{
-    name: 'git',
-    image: 'plugins/docker:windows-1809',  // TODO: This should just use the manifest
-    settings: {
-      repo: 'drone/git',
-      dockerfile: 'docker/Dockerfile.windows.' + version,
-      auto_tag: true,
-      auto_tag_suffix: 'windows-' + version + '-' + arch,
-
-      username: { from_secret: 'docker_username' },
-      password: { from_secret: 'docker_password' },
-
-      // Windows specific options
-      daemon_off: true,
-      purge: 'false',  // TODO: Fix bug where setting false won't generate the yaml value
-    },
-    volumes: [{ name: windows_pipe_volume, path: windows_pipe }],
-  }],
-
-  volumes: [{ name: windows_pipe_volume, host: { path: windows_pipe } }],
-  trigger: trigger,
-};
-
-[
-  pipeline(version, 'amd64')
-  for version in versions
-] + [
-  {
-    kind: 'pipeline',
-    name: 'Image Manifest',
-
-    steps: [{
-      name: 'manifest',
-      image: 'plugins/manifest',
-      settings: {
-        spec: 'docker/manifest.tmpl',
-        ignore_missing: true,
-
-        username: { from_secret: 'docker_username' },
-        password: { from_secret: 'docker_password' },
-      },
-    }],
-
-    depends_on: [
-      pipeline_name(version)
-      for version in versions
-    ],
-    trigger: trigger,
-  },
-]

.drone.windows.yml

@@ -1,65 +0,0 @@
----
-kind: pipeline
-name: Windows 1809
-
-platform:
-  os: windows
-  arch: amd64
-  version: 1809
-
-steps:
-- name: git
-  image: plugins/docker:windows-1809
-  settings:
-    auto_tag: true
-    auto_tag_suffix: windows-1809-amd64
-    daemon_off: true
-    dockerfile: docker/Dockerfile.windows.1809
-    password:
-      from_secret: docker_password
-    purge: false
-    repo: drone/git
-    username:
-      from_secret: docker_username
-  volumes:
-  - name: docker_pipe
-    path: \\\\.\\pipe\\docker_engine
-
-volumes:
-- name: docker_pipe
-  host:
-    path: \\\\.\\pipe\\docker_engine
-
-trigger:
-  ref:
-  - refs/heads/master
-  - "refs/tags/**"
-
----
-kind: pipeline
-name: Image Manifest
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: manifest
-  image: plugins/manifest
-  settings:
-    ignore_missing: true
-    password:
-      from_secret: docker_password
-    spec: docker/manifest.tmpl
-    username:
-      from_secret: docker_username
-
-trigger:
-  ref:
-  - refs/heads/master
-  - "refs/tags/**"
-
-depends_on:
-- Windows 1809
-
-...

.gitignore

@@ -1,2 +0,0 @@
-.drone.jsonnet
-.drone.jsonnet.yml