diff --git a/.circleci/config.yml b/.circleci/config.yml
index 492649c..1648d5d 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -14,9 +14,10 @@ jobs:
             curl -L -o /tmp/docker-$VER.tgz https://get.docker.com/builds/Linux/x86_64/docker-$VER.tgz
             tar -xz -C /tmp -f /tmp/docker-$VER.tgz
             mv /tmp/docker/* /usr/bin
-      - run: |
+      - run:
           name: Build Docker image
-          docker build -t serjs/go-socks5-proxy .
+          command:
+            docker build -t serjs/go-socks5-proxy .
       - deploy:
           command: |
             docker login -u $DOCKERHUB_USER -p $DOCKERHUB_PASSWORD