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Docker container of host OS without image

March 12, 2017 Leave a comment

I often need to check that my applications binary distribution embed all its shared libraries so it can work on all distros. I used to do this with chroot and mount --bind but it’s much easier with Docker:

tar cT /dev/null | docker import - empty
docker run -v /lib:/lib:ro -v /path/to/my/app:/opt/app -it empty /opt/app/bin/app

This create an empty Docker image then run a container with only /lib mounted from the host.

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