Add starlark build

.drone.star

@@ -0,0 +1,279 @@
+golang_image = "golang:1.15"
+
+def main(ctx):
+    before = testing(ctx)
+
+    stages = [
+        linux(ctx, "amd64"),
+        linux(ctx, "arm64"),
+        linux(ctx, "arm"),
+    ]
+
+    after = manifest(ctx) + gitter(ctx)
+
+    for b in before:
+        for s in stages:
+            s["depends_on"].append(b["name"])
+
+    for s in stages:
+        for a in after:
+            a["depends_on"].append(s["name"])
+
+    return before + stages + after
+
+def testing(ctx):
+    step_volumes = [
+        {
+            "name": "gopath",
+            "path": "/go",
+        },
+    ]
+
+    return [
+        {
+            "kind": "pipeline",
+            "type": "docker",
+            "name": "testing",
+            "platform": {
+                "os": "linux",
+                "arch": "amd64",
+            },
+            "steps": [
+                {
+                    "name": "staticcheck",
+                    "image": golang_image,
+                    "pull": "always",
+                    "commands": [
+                        "go run honnef.co/go/tools/cmd/staticcheck ./...",
+                    ],
+                    "volumes": step_volumes,
+                },
+                {
+                    "name": "lint",
+                    "image": golang_image,
+                    "pull": "always",
+                    "commands": [
+                        "go run golang.org/x/lint/golint -set_exit_status ./...",
+                    ],
+                    "volumes": step_volumes,
+                },
+                {
+                    "name": "vet",
+                    "image": golang_image,
+                    "commands": [
+                        "go vet ./...",
+                    ],
+                    "volumes": step_volumes,
+                },
+                {
+                    "name": "test",
+                    "image": golang_image,
+                    "commands": [
+                        "go test -cover ./...",
+                    ],
+                    "volumes": step_volumes,
+                },
+            ],
+            "volumes": [
+                {
+                    "name": "gopath",
+                    "temp": {},
+                },
+            ],
+            "trigger": {
+                "ref": [
+                    "refs/heads/master",
+                    "refs/tags/**",
+                    "refs/pull/**",
+                ],
+            },
+        },
+    ]
+
+def linux(ctx, arch):
+    steps = [
+        {
+            "name": "environment",
+            "image": golang_image,
+            "pull": "always",
+            "environment": {
+                "CGO_ENABLED": "0",
+            },
+            "commands": [
+                "go version",
+                "go env",
+            ],
+        },
+    ]
+
+    steps.extend(linux_build(ctx, arch, "docker"))
+    steps.extend(linux_build(ctx, arch, "acr"))
+    steps.extend(linux_build(ctx, arch, "ecr"))
+    steps.extend(linux_build(ctx, arch, "gcr"))
+    steps.extend(linux_build(ctx, arch, "heroku"))
+
+    return {
+        "kind": "pipeline",
+        "type": "docker",
+        "name": "linux-%s" % (arch),
+        "platform": {
+            "os": "linux",
+            "arch": arch,
+        },
+        "steps": steps,
+        "depends_on": [],
+        "trigger": {
+            "ref": [
+                "refs/heads/master",
+                "refs/tags/**",
+                "refs/pull/**",
+            ],
+        },
+    }
+
+def linux_build(ctx, arch, name):
+    docker = {
+        "dockerfile": "docker/%s/Dockerfile.linux.%s" % (name, arch),
+        "repo": "plugins/%s" % (name),
+        "username": {
+            "from_secret": "docker_username",
+        },
+        "password": {
+            "from_secret": "docker_password",
+        },
+    }
+
+    if ctx.build.event == "pull_request":
+        docker.update({
+            "dry_run": True,
+            "tags": "linux-%s" % (arch),
+        })
+    else:
+        docker.update({
+            "auto_tag": True,
+            "auto_tag_suffix": "linux-%s" % (arch),
+        })
+
+    if ctx.build.event == "tag":
+        build = [
+            'go build -v -ldflags "-X main.version=%s" -a -tags netgo -o release/linux/%s/drone-npm ./cmd/drone-npm' % (ctx.build.ref.replace("refs/tags/v", ""), arch),
+        ]
+    else:
+        build = [
+            'go build -v -ldflags "-X main.version=%s" -a -tags netgo -o release/linux/%s/drone-npm ./cmd/drone-npm' % (ctx.build.commit[0:8], arch),
+        ]
+
+    return [
+        {
+            "name": "build-%s" % (name),
+            "image": golang_image,
+            "environment": {
+                "CGO_ENABLED": "0",
+            },
+            "commands": build,
+        },
+        {
+            "name": "executable-%s" % (name),
+            "image": golang_image,
+            "commands": [
+                "./release/linux/%s/drone-%s --help" % (arch, name),
+            ],
+        },
+        {
+            "name": "docker-%s" % (name),
+            "image": "plugins/docker",
+            "pull": "always",
+            "settings": docker,
+        },
+    ]
+
+def manifest(ctx):
+    steps = []
+
+    steps.extend(manifest_build(ctx, "docker"))
+    steps.extend(manifest_build(ctx, "acr"))
+    steps.extend(manifest_build(ctx, "ecr"))
+    steps.extend(manifest_build(ctx, "gcr"))
+    steps.extend(manifest_build(ctx, "heroku"))
+
+    return [
+        {
+            "kind": "pipeline",
+            "type": "docker",
+            "name": "manifest",
+            "steps": steps,
+            "depends_on": [],
+            "trigger": {
+                "ref": [
+                    "refs/heads/master",
+                    "refs/tags/**",
+                ],
+            },
+        },
+    ]
+
+def manifest_build(ctx, name):
+    return [
+        {
+            "name": "manifest-%s" % (name),
+            "image": "plugins/manifest",
+            "pull": "always",
+            "settings": {
+                "auto_tag": "true",
+                "username": {
+                    "from_secret": "docker_username",
+                },
+                "password": {
+                    "from_secret": "docker_password",
+                },
+                "spec": "docker/%s/manifest.tmpl" % (name),
+                "ignore_missing": "true",
+            },
+        },
+        {
+            "name": "microbadger-%s" % (name),
+            "image": "plugins/webhook",
+            "pull": "always",
+            "settings": {
+                "urls": {
+                    "from_secret": "microbadger_url",
+                },
+            },
+        },
+    ]
+
+def gitter(ctx):
+    return [
+        {
+            "kind": "pipeline",
+            "type": "docker",
+            "name": "gitter",
+            "clone": {
+                "disable": True,
+            },
+            "steps": [
+                {
+                    "name": "gitter",
+                    "image": "plugins/gitter",
+                    "pull": "always",
+                    "settings": {
+                        "webhook": {
+                            "from_secret": "gitter_webhook",
+                        },
+                    },
+                },
+            ],
+            "depends_on": [
+                "manifest",
+            ],
+            "trigger": {
+                "ref": [
+                    "refs/heads/master",
+                    "refs/tags/**",
+                ],
+                "status": [
+                    "failure",
+                ],
+            },
+        },
+    ]