Update to Alpine 3.11 and Starlark config

.drone.star

@@ -0,0 +1,58 @@
+def main(ctx):
+  return [
+    step("3.9"),
+    step("3.10"),
+    step("3.11", ["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"],
+        }
+      }
+    ]
+  }
+

.drone.yml

@@ -1,32 +0,0 @@
-pipeline:
-  build:
-    image: spritsail/docker-build
-    repo: alpine-dev
-    build_args:
-      - ALPINE_TAG=${ALPINE_TAG%%,*}
-
-  test:
-    image: spritsail/docker-test
-    repo: alpine-dev
-    run: su-exec nobody apk --version
-
-  publish:
-    image: spritsail/docker-publish
-    when: { branch: [ master ], event: [ push, tag, deployment ] }
-    secrets: [ docker_username, docker_password ]
-    from: alpine-dev
-    repo: 'spritsail/alpine'
-    tags: ${ALPINE_TAG}
-
-  notify:
-    image: spritsail/notify
-    when: { status: [ success, failure ] }
-    secrets: [ webhook_url, notify_token ]
-    tag: ${ALPINE_TAG%%,*}
-
-matrix:
-  ALPINE_TAG:
-    - 3.8
-    - 3.9
-    - 3.10,latest
-    - edge

Dockerfile

@@ -1,4 +1,4 @@
-ARG ALPINE_TAG=3.10
+ARG ALPINE_TAG=3.11
 
 FROM alpine:$ALPINE_TAG