fix kaniko entrypoint for Woodpecker v3

.woodpecker.yml

@@ -3,9 +3,37 @@ when:
   event: push
 
 steps:
-  - name: test
-    image: alpine
+  - name: build-and-push
+    image: gcr.io/kaniko-project/executor:debug
+    environment:
+      DOCKER_USERNAME:
+        from_secret: docker_username
+      DOCKER_PASSWORD:
+        from_secret: docker_password
+    entrypoint: ["/busybox/sh", "-c"]
     commands:
-      - echo 'Woodpecker v3 works'
-      - pwd
-      - ls -la
+      - TAG=${CI_COMMIT_SHA:0:8}
+      - REGISTRY=git.mikhailkilin.ru
+      - REPO=killingdruid/bcard
+      - echo "Building $REGISTRY/$REPO:$TAG"
+      - AUTH=$(echo -n "$DOCKER_USERNAME:$DOCKER_PASSWORD" | base64)
+      - mkdir -p /kaniko/.docker
+      - 'printf "{\"auths\":{\"%s\":{\"auth\":\"%s\"}}}" "$REGISTRY" "$AUTH" > /kaniko/.docker/config.json'
+      - /kaniko/executor --context=$CI_WORKSPACE --dockerfile=$CI_WORKSPACE/Dockerfile --destination=$REGISTRY/$REPO:$TAG --destination=$REGISTRY/$REPO:latest --insecure --skip-tls-verify --verbosity=info
+
+  - name: update-manifests
+    image: alpine
+    environment:
+      DOCKER_USERNAME:
+        from_secret: docker_username
+      DOCKER_PASSWORD:
+        from_secret: docker_password
+    commands:
+      - apk add --no-cache git
+      - 'TAG=${CI_COMMIT_SHA:0:8}'
+      - 'sed -i "s|image:.*killingdruid/bcard:.*|image: git.mikhailkilin.ru/killingdruid/bcard:$TAG|" k8s/bcard.yaml'
+      - 'git config user.email "ci@mikhailkilin.ru"'
+      - 'git config user.name "Woodpecker CI"'
+      - git add k8s/bcard.yaml
+      - 'git diff --cached --quiet && echo No_changes || git commit -m "[skip ci] deploy bcard:$TAG"'
+      - 'git push https://$DOCKER_USERNAME:$DOCKER_PASSWORD@git.mikhailkilin.ru/killingdruid/bcard.git HEAD:main'