Data not updated on the remote machine after making git pull origin master, pipeline bitbucket

Question

I got this pipeline and a runner on my remote machine

bitbucket_pipeline.yml:

image: rust
pipelines:
   branches:
       master:
          - step:
              name: 'Staging'
              deployment: Staging
              runs-on:
                 - self.hosted
                 - linux
              script:
                 - cd /app
                 - pwd
                 - git init
                 - git remote add origin [email protected]:hha/app.git
                 - ls -la
                 - git fetch
                 - git checkout master
                 - git pull origin master

runner on the remote machine:

docker container run -it -v /app:/app -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/docker/containers:/var/lib/docker/containers:ro -e ACCOUNT_UUID={r3d4-ct3d} -e REPOSITORY_UUID={r3d4-ct3d} -e RUNNER_UUID={r3d4-ct3d} -e RUNTIME_PREREQUISITES_ENABLED=true -e OAUTH_CLIENT_ID=r3d4-ct3d -e OAUTH_CLIENT_SECRET=r3d4-ct3dBpBfK0XBTr -e WORKING_DIRECTORY=/app --name runner-r3d4-ct3d docker-public.packages.atlassian.com/sox/atlassian/bitbucket-pipelines-runner:1

Pipeline is working/passing after setting SSH keys pipeline, but I don't see any change on the path where the app is on my remote machine. Changes are done on the docker container but not on the path of my remote machine.

I have the volume on my runner -v /app:/app, but it seem doesn't work, why?. Thanks