What is Docker volume mapping and how does it work?

What is Docker volume mapping and how does it work?

Docker volume mapping allows you to persist data generated by and used by Docker containers. It enables you to map a directory on your host machine to a directory in the container.

Why would I want to use volume mapping instead of just using the container's filesystem?

Using volume mapping is beneficial because it allows data to persist even after the container is stopped or removed. It also facilitates sharing data between containers.

Can you give me an example of how to set up volume mapping in a Docker command?

Sure! You can use the -v flag in your docker run command. For example: docker run -v /host/path:/container/path my-image.

Are there any limitations or considerations I should be aware of when using volume mapping?

Yes, be mindful of permissions and ownership issues, as the host and container may have different user IDs. Also, ensure the host path exists before mapping.