sudo apt-key adv --recv-key --keyserver keyserver.ubuntu.com DC0A179E47E7FC8D
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --recv-key --keyserver keyserver.ubuntu.com DC0A179E47E7FC8D
gpg: requesting key 47E7FC8D from hkp server keyserver.ubuntu.com
gpgkeys: key DC0A179E47E7FC8D not found on keyserver
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0