Errors from digitalocean during the droplet installation

[kusayuzayushko]

digitalocean: # Executing docker install script, commit: 26ff363bcf3b3f5a00498ac43694bf1c7d9ce16c
==> digitalocean: + sh -c apt-get update -qq >/dev/null
==> digitalocean: + sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq apt-transport-https ca-certificates curl >/dev/null
==> digitalocean: + sh -c curl -fsSL "https://download.docker.com/linux/ubuntu/gpg" | apt-key add -qq - >/dev/null
==> digitalocean: Warning: apt-key output should not be parsed (stdout is not a terminal)
==> digitalocean: + sh -c echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu eoan stable" > /etc/apt/sources.list.d/docker.list
==> digitalocean: + sh -c apt-get update -qq >/dev/null
==> digitalocean: + [ -n  ]
==> digitalocean: + sh -c apt-get install -y -qq --no-install-recommends docker-ce >/dev/null
==> digitalocean: debconf: unable to initialize frontend: Dialog
==> digitalocean: debconf: (TERM is not set, so the dialog frontend is not usable.)
==> digitalocean: debconf: falling back to frontend: Readline
==> digitalocean: debconf: unable to initialize frontend: Readline
==> digitalocean: debconf: (This frontend requires a controlling tty.)
==> digitalocean: debconf: falling back to frontend: Teletype
==> digitalocean: dpkg-preconfigure: unable to re-open stdin:
==> digitalocean: + sh -c docker version

[pry0cc]

This is benign, it doesn't cause any issues with the install, purely cosmetic.