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I'm using centos:6 and need to build an image -using Dockerfile- which has a number of rpms installed (Oracle client, in fact). I don't want to copy/add the rpms inside the image, as it will make the image bulky (and I have to remove the rpms after install, anyway).
Is there a way to mount a folder on the host (CentOS, itself) which contains the rpms, on the image, via Dockerfile and/or using any option of "docker build" command, during the BUILD phase?
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Cloning From An Existing Container But, if you do need to add a volume to a running container, you can use docker commit to make a new image based on that container, and then clone it with the new volume. Then, you can run the new image, replacing the old image with the cloned one.
Volumes are stored in a part of the host filesystem which is managed by Docker ( /var/lib/docker/volumes/ on Linux).
There's no way, according to the docs for build and run as well as from my experience.
Mounting things is done when you're running a container, rather than when building an image.
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