change deploy branch

Author: smalltide

.circleci/config.yml

@@ -19,7 +19,7 @@ jobs:
             docker-compose run dockerapp python test.py
       - deploy:
           name: Push application Docker image
-          branch: [master]
+          branch: master
           command: |
             docker login -e $DOCKER_HUB_EMAIL -u $DOCKER_HUB_USER_ID -p $DOCKER_HUB_PWD
             docker tag dockertutorialdevops_dockerapp $DOCKER_HUB_USER_ID/dockerapp:$CIRCLE_SHA1