I am trying install docker from there instructions: https://linuxconfig.org/how-to-install-docker-on-ubuntu-18-04-bionic-beaver
I am running the command:
$ sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
And get:
curl: (77) error setting certificate verify locations:
CAfile: /etc/ssl/certs/ca-certificates.crt
CApath: /etc/ssl/certs
gpg: no valid OpenPGP data found.