test: add ci-build-container to pipeline trigger for testing

.drone.yml

@@ -6,6 +6,9 @@ services:
   - name: docker
     image: docker:dind
     privileged: true
+    volumes:
+      - name: dockersock
+        path: /var/run
 
 trigger:
   branch:
@@ -18,8 +21,10 @@ trigger:
 steps:
   - name: build-and-publish-container
     image: docker:cli
+    volumes:
+      - name: dockersock
+        path: /var/run
     environment:
-      DOCKER_HOST: tcp://docker:2375 # Connect to dind service
       REGISTRY: git.local-it.org/ci-builder
       IMAGE_NAME: mitgliederverwaltung
       REGISTRY_USERNAME:
@@ -27,8 +32,7 @@ steps:
       REGISTRY_TOKEN:
         from_secret: DRONE_REGISTRY_TOKEN
     commands:
-      - sleep 5 # give docker time to start
-      - docker info # verify docker is ready
+      - sleep 6 # give docker time to start
       # Build image once
       - docker build --tag $REGISTRY/$IMAGE_NAME:build-$DRONE_BUILD_NUMBER .
       # Login to registry
@@ -52,8 +56,9 @@ steps:
           docker push $REGISTRY/$IMAGE_NAME:latest
         fi
 
-
-# No volumes needed - docker:cli connects to dind service via TCP
+volumes:
+  - name: dockersock
+    temp: {}
 
 ---
 kind: pipeline