I have a need to check if a directory in my running container is mounted from the host or not.
Example: using the docker run .... -v /host-data:/data .... command.
If not mounted, I want to warn the user that data on this directory will be lost when the container is terminated...
I found a rough, but simple solution.
mount | grep '/data'
will result in 0 if found (which means it's mounted).
I added it to my entry-point script and it works as expected.
Ideas for improvements are welcome!
I hope this helps.
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