add drone-ci

.drone.yml

@@ -5,19 +5,42 @@ type: docker
 steps:
   - name: build
     image: docker:dind
-    settings:
-      mtu: 1450
     volumes:
       - name: dockersock
         path: /var/run
-#    environment:
-#      DOCKER_PASSWORD:
-#        from_secret: docker_password
+    environment:
+      DOCKER_USERNAME:
+        from_secret: docker_username
+      DOCKER_PASSWORD:
+        from_secret: docker_password
     commands:
       - sleep 5 # give docker enough time to start
-      - docker pull pommib/powerdns:4.6-bookworm
-      - docker pull debian:bookworm-slim
-      - docker build --no-cache -t pommib/powerdns:4.6-bookworm ./debian/12/
+      - docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD
+      - ./debian/11/build.sh
+      - ./debian/12/build.sh
+    when:
+      branch:
+      - master
+      event:
+      - push
+
+  - name: rebuild
+    image: docker:dind
+    volumes:
+      - name: dockersock
+        path: /var/run
+    environment:
+      DOCKER_USERNAME:
+        from_secret: docker_username
+      DOCKER_PASSWORD:
+        from_secret: docker_password
+    commands:
+      - sleep 5 # give docker enough time to start
+      - docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD
+      - ./build/rebuild.sh
+    when:
+      event:
+      - cron
 
 services:
   - name: docker

build/rebuild.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 updates_available () {
+    docker pull $1
     if test "$(docker run -it --rm $1 /bin/sh -c 'apt -qqq update && apt -qq list --upgradable')" != ""; then
         return 0
     else