Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -50,7 +50,10 @@ build:
   variables:
     DOCKER_HOST: tcp://docker:2375/
     DOCKER_TLS_CERTDIR: ""     # Disable TLS since we’re in a trusted CI env
+    DOCKER_DRIVER: overlay2
   before_script:
+    - echo "Waiting for Docker service..."
+    - until docker info; do sleep 1; done
     - echo "Building Docker image for commit:" ${CI_COMMIT_SHORT_SHA}
     - echo "Logging in to Docker registry..."
     - echo "Docker Registry :" ${DOCKER_REGISTRY}