https://download.docker.com/linux/ubuntu groovy Release Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 13.35.70.53 443]
対応方法
touch /etc/apt/apt.conf.d/99verify-peer.conf \ && echo >>/etc/apt/apt.conf.d/99verify-peer.conf "Acquire { https::Verify-Peer false }"