Migrate from Drone CI to Woodpecker CI

Replace .drone.yml with .woodpecker.yaml using official
woodpeckerci/plugin-kaniko image. Update base image to Alpine 3.22.2.

.woodpecker.yaml

@@ -1,25 +1,16 @@
 when:
-  - event: [push, pull_request, manual, tag]
+  - event: [push, pull_request, manual]
 
 steps:
-  - name: generate-tags
-    image: ghcr.io/abh/woodpecker-docker-tags-plugin:sha-86e52ce
-    settings:
-      tags: |
-        branch
-        sha
-        edge
-        raw -v build-${CI_PIPELINE_NUMBER}
-        semver --format {{major}}
-        semver --format {{major}}.{{minor}}
-        semver --format {{major}}.{{minor}}.{{patch}}
-
   - name: docker
     image: woodpeckerci/plugin-kaniko
     settings:
       dockerfile: Dockerfile
       registry: harbor.ntppool.org
       repo: library/static-web
+      tags:
+        - ${CI_COMMIT_SHA:0:7}
+        - ${CI_COMMIT_BRANCH}
       cache: true
       username:
         from_secret: harbor_library_username

Dockerfile

@@ -1,4 +1,4 @@
-FROM harbor.ntppool.org/perlorg/base-os:3.23.3
+FROM harbor.ntppool.org/perlorg/base-os:3.22.2
 ENV BUILD_VERSION 1
 USER root
 WORKDIR /web