The command to configure Bintray public GPG key,
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61
can be failed if the gnupg package is not installed. Please install the gnupg package with following command,
sudo apt install gnupg
Command for updating the APT repository,
sudo apt update
can be failed in the stage of certificate verification.
Please install ca-certificates package with the following command,
sudo apt install ca-certificates