Update Woodpecker CI config

.woodpecker/build.yaml

@@ -0,0 +1,35 @@
+matrix:
+  platform:
+    - linux/amd64
+    - linux/arm64
+
+labels:
+  platform: ${platform}
+
+when:
+  branch: main
+  event: [push, pull_request, tag]
+
+steps:
+  test-build:
+    image: docker:27-dind
+    commands:
+      - docker buildx build -t source.hodakov.me/containers/renkit:${CI_COMMIT_SHA:0:10}-${platform##linux/} .
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    when:
+      event: pull_request
+
+  build-to-registry:
+    image: docker:27-dind
+    environment:
+      CI_USER_PASSWORD:
+        from_secret: registry_token
+    commands:
+      - docker login -u ${CI_REPO_OWNER} -p $${CI_USER_PASSWORD} source.hodakov.me
+      - docker buildx build -t source.hodakov.me/containers/renkit:${CI_COMMIT_SHA:0:10}-${platform##linux/} .
+      - docker push source.hodakov.me/containers/renkit:${CI_COMMIT_SHA:0:10}-${platform##linux/}
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    when:
+      event: [push, tag]