Setting umask

You are advised to set umask of the host (including the host machine) and container to 027 or a larger value to improve security.

For example, to set umask to 077, perform the following operations:

1. Log in to the server as the root user and edit the /etc/profile file.

   vim /etc/profile

2. Add umask 077 to the end of the /etc/profile file, save the file, and exit.
3. Run the following command to make the configuration take effect:

   source /etc/profile