ci: add 'VCS_REF' build arg during compose build

.drone.yml

@@ -138,7 +138,7 @@ steps:
       COMPOSE_DOCKER_CLI_BUILD: 1
       DOCKER_BUILDKIT: 1
     commands:
-      - docker-compose build --no-cache --pull
+      - docker-compose build --build-arg VCS_REF=${DRONE_COMMIT} --no-cache --pull
 
 volumes:
   - name: s
@@ -300,7 +300,7 @@ steps:
       - name: s
         path: /var/run/docker.sock
     commands:
-      - docker-compose build --no-cache
+      - docker-compose build --build-arg VCS_REF=${DRONE_COMMIT} --no-cache
     when:
       branch: master
       status: success