Docker exposes the host directory or file mounting facility through the -v option of the docker run command. Let’s see how to use it in this tutorial.
Docker uses the -v option in three different formats:
1. -v <container mount path>
2. -v <host path>/<container mount path>
3. -v <host path>/<container mount path>:<read write mode>
The following example demonstrates how to make available to the container the folder “/home/francesco” contained on the host machine.
docker run -it -v /home/francesco/:/home/:rw fedora /bin/bash
If /home/francesco is not found on the Docker host, the Docker engine will create the directory itself. However, the system-generated directory cannot be deleted using the -v option of the docker rm subcommand.
The :ro modifier specifies that a container mounts a file or file system read-only. To mount a file or file system read-writable, specify the :rw modifier instead or omit the modifier altogether.
You can check that any changes made to the host shared directory, will be visible to the container.Found the article helpful? if so please follow us on Socials