I have a CentOS 7 docker container that has an apache browser running as "systemd service" (Yes it's a privileged container). After a few days, the apache service stops running in the container, and "journalctl -xe" command gives me an error about the full storage at "/run". I didn't mount this volume. This is mounted by docker without my consent. This volume has tmpfs filesystem. When I restart the container "/run" gets cleaned and the error goes away.
Also when volume at /run is full then there's still a lot of space available in the host OS disk. How can I configure the container to auto clear data at "/run" so that it doesn't get full? Also, I would like to know what kind of data is stored at "/run".