Currently I have build a custom image based on Building Container-Optimized OS from source. Everything went OK with the process. Once completed I have created a an instance based on that image on GCE. Here is the issue, if I do any changes on /etc/security/limits.conf or any other file on that path, or to sysctl.conf, once the instance is rebooted those chages get lost (everything is reset to initial values). Any help related to how I could persist those changes or how I could integrate them into the custom build would be much appreciated.