add woodpecker pipeline

.woodpecker/build.yml

@@ -0,0 +1,26 @@
+pipeline:
+    check_base:
+        image: vistanarvas/container-update-checker:latest
+        secrets: [ DOCKERHUB_TOKEN ]
+        environment:
+            DOCKER_USERNAME: vistanarvas
+            BASE: alpine:latest
+            TARGET: vistanarvas/${CI_REPO_NAME}:latest
+        when:
+            cron: nightly
+            event: cron
+    build_and_publish:
+        image: woodpeckerci/plugin-docker-buildx
+        settings:
+            username: vistanarvas
+            password:
+                from_secret: DOCKERHUB_TOKEN
+            context: ./build
+            dockerfile: ./build/Dockerfile
+            repo: vistanarvas/${CI_REPO_NAME}
+            auto_tag: true
+        when:
+            path:
+                include: [ '.woodpecker/build.yml', 'build/*' ]
+            cron: nightly
+            event: [push, tag, deployment, cron]