Currently, it is not possible to pass arbitrary parameters to the "docker run" command using the given plugin. While there is the "privileged" checkbox, the user has no option to set up the container capabilities in a more fine grained manner. Also, there are no checkboxes for specific docker run command line switches, e.g. "--sysctl [...]" or "–cpus [..]".
To overcome this problem, a simple "Additional docker run parameters" field could be added to the UI. I attached a patch file implementing this approach to the ticket. The patch was done on plugin release version 1.7.3.