Expose volume data path for attaching a volume to the container to have data persistence.

[ochanig33]

Currently we do not have a provision to persist the data. Container gone, data gone.

I want to keep my data storage no matter if we delete the container, data should still be there.

Reference: Please take a look on jenkins where they exposed the path which can be used to mount on your volume. If user deletes the container, data will still be there.

How to use jenkins image:
docker run -p 8080:8080 -p 50000:50000 jenkins
This will store the workspace in /var/jenkins_home. All Jenkins data lives in there - including plugins and configuration. You will probably want to make that a persistent volume (recommended):

docker run -p 8080:8080 -p 50000:50000 -v /your/home:/var/jenkins_home jenkins

Link: https://hub.docker.com/_/jenkins