What do I do if the CAFilePermission error occurs when I do not have the permissions to execute the bootstrap file of a custom runtime?

To execute the bootstrap file of a custom runtime, you must have the 777 or 755 permissions. Otherwise, the following error is returned:

{
"ErrorCode":"CAFilePermission",
    "ErrorMessage":"The CA process cannot be started due to bootstrap file don't have execute permissions"
} 

You can run the chmod 777 bootstrap or chmod 755 bootstrap command to obtain the permissions before you package files.