大佬们， gitlab-ci 问题，求解

// gitlab-ci.yml
build-staging:
stage: build
script:
- docker build -t appName .
- docker login -u root -p password hub.com
- docker push appName
only:
- master

deploy-staging:
stage: deploy
script:
- docker run --rm -v /data/ci/agatha-staging:/app/tmp appName
- scp -r /data/ci/agatha-staging/* [email protected]:/etc/share/nginx/html/vueCli
- docker login -u root -p password hub.com
- docker rmi appName


// Dockerfile
COPY . /app
WORKDIR /app

RUN yarn install && npm run build
CMD cp -TR /app/dist /app/tmp
通过 gitlab-ci 和 docker 部署 vue 项目,这种情况下如何回退呢？