Replace .drone.yml with Starlark

.drone.star

@@ -0,0 +1,58 @@
+def main(ctx):
+  return [
+    step("3.8"),
+    step("3.9"),
+    step("3.10",["latest"]),
+    step("edge"),
+  ]
+
+def step(alpinever,tags=[]):
+  return {
+    "kind": "pipeline",
+    "name": "build-%s" % alpinever,
+    "steps": [
+      {
+        "name": "build",
+        "image": "spritsail/docker-build",
+        "pull": "always",
+        "settings": {
+          "repo": "alpine-dev-%s" % alpinever,
+          "build_args": [
+            "ALPINE_TAG=%s" % alpinever,
+          ],
+        },
+      },
+      {
+        "name": "test",
+        "image": "spritsail/docker-test",
+        "pull": "always",
+        "settings": {
+          "repo": "spritsail/alpine",
+          "run": "su-exec nobody apk --version",
+        },
+      },
+      {
+        "name": "publish",
+        "image": "spritsail/docker-publish",
+        "pull": "always",
+        "settings": {
+          "from": "alpine-dev-%s" % alpinever,
+          "repo": "spritsail/alpine",
+          "tags": [alpinever] + tags,
+        },
+        "environment": {
+          "DOCKER_USERNAME": {
+            "from_secret": "docker_username",
+          },
+          "DOCKER_PASSWORD": {
+            "from_secret": "docker_password",
+          },
+        },
+        "when": {
+          "branch": ["master"],
+          "event": ["push"],
+        },
+      },
+    ]
+  }
+