Installing: Docker-ce repo missing?

Is it just me or… Created a new DigitalOcean node running Ubuntu 17.04 (twice, to verify), ran a script which I’ve used successfully earlier to set up environment, and now I get:
(only relevant lines shown)

host:~# lsb_release -cs

host:~# apt-key fingerprint 0EBFCD88
pub   rsa4096 2017-02-22 [SCEA]
      9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
uid        [ unknown] Docker Release (CE deb) <>
sub   rsa4096 2017-02-22 [S]

host:~# apt-get update
Get:5 zesty InRelease [40.4 kB]
Get:7 zesty/stable amd64 Packages [1,923 B]

host:~# apt-cache policy docker-ce
  Installed: (none)
  Candidate: (none)
  Version table:

host:~# apt install docker-ce
Package docker-ce is not available, but is referred to by another package.
E: Package 'docker-ce' has no installation candidate