refactor: use plugins/docker instead of manual dind setup

.drone.yml

@@ -2,13 +2,6 @@ kind: pipeline
 type: docker
 name: build-and-publish
 
-services:
-  - name: docker
-    image: docker:dind
-    privileged: true
-    environment:
-      DOCKER_TLS_CERTDIR: "" # Disable TLS and Unix socket - use TCP only
-
 trigger:
   branch:
     - main
@@ -19,43 +12,35 @@ trigger:
 
 steps:
   - name: build-and-publish-container
-    image: docker:cli
-    environment:
-      DOCKER_HOST: tcp://docker:2375 # Connect to dind service
-      REGISTRY: git.local-it.org/ci-builder
-      IMAGE_NAME: mitgliederverwaltung
-      REGISTRY_USERNAME:
+    image: plugins/docker
+    settings:
+      registry: git.local-it.org
+      repo: git.local-it.org/ci-builder/mitgliederverwaltung
+      username:
         from_secret: DRONE_REGISTRY_USERNAME
-      REGISTRY_TOKEN:
+      password:
         from_secret: DRONE_REGISTRY_TOKEN
-    commands:
-      - sleep 5 # give docker time to start
-      - docker info # verify docker is ready
-      # Build image once
-      - docker build --tag $REGISTRY/$IMAGE_NAME:build-$DRONE_BUILD_NUMBER .
-      # Login to registry
-      - echo "$REGISTRY_TOKEN" | docker login --username "$REGISTRY_USERNAME" --password-stdin git.local-it.org
-      # Tag and push based on event type
-      - |
-        if [ "$DRONE_BUILD_EVENT" = "tag" ]; then
-          # For tag events: use tag version (e.g., v1.0.0 -> 1.0.0) and latest
-          VERSION=$(echo $DRONE_TAG | sed 's/^v//')
-          echo "Tagging and pushing version $VERSION"
-          docker tag $REGISTRY/$IMAGE_NAME:build-$DRONE_BUILD_NUMBER $REGISTRY/$IMAGE_NAME:$VERSION
-          docker tag $REGISTRY/$IMAGE_NAME:build-$DRONE_BUILD_NUMBER $REGISTRY/$IMAGE_NAME:latest
-          docker push $REGISTRY/$IMAGE_NAME:$VERSION
-          docker push $REGISTRY/$IMAGE_NAME:latest
-        else
-          # For main branch pushes: use commit SHA and latest
-          echo "Tagging and pushing commit $DRONE_COMMIT_SHA"
-          docker tag $REGISTRY/$IMAGE_NAME:build-$DRONE_BUILD_NUMBER $REGISTRY/$IMAGE_NAME:$DRONE_COMMIT_SHA
-          docker tag $REGISTRY/$IMAGE_NAME:build-$DRONE_BUILD_NUMBER $REGISTRY/$IMAGE_NAME:latest
-          docker push $REGISTRY/$IMAGE_NAME:$DRONE_COMMIT_SHA
-          docker push $REGISTRY/$IMAGE_NAME:latest
-        fi
-
-
-# No volumes needed - docker:cli connects to dind service via TCP
+      auto_tag: true
+      auto_tag_suffix: ${DRONE_COMMIT_SHA:0:8}
+    when:
+      event:
+        - tag
+  
+  - name: build-and-publish-container-branch
+    image: plugins/docker
+    settings:
+      registry: git.local-it.org
+      repo: git.local-it.org/ci-builder/mitgliederverwaltung
+      username:
+        from_secret: DRONE_REGISTRY_USERNAME
+      password:
+        from_secret: DRONE_REGISTRY_TOKEN
+      tags:
+        - latest
+        - ${DRONE_COMMIT_SHA:0:8}
+    when:
+      event:
+        - push
 
 ---
 kind: pipeline