How to configure for security under cp-all-in-one docker installation ?

[Chesterguan]

Hi :
I have already successfully launched the cp-all-in-one in the docker environment. However, to make it more productive, I am trying to attach the security configuration. However, I have no idea what to do this. I tried to modify the configuration file inside the container directly, but with the RHEL OS, I don't know the password for root and also there is no way that I could change the password without sudo command installed. Kind of a dead circle, is there any way that I could do that ? Thanks so much !!