Running this very simple Dockerfile
FROM ubuntu:17.04
RUN apt-get update
fails with these errors:
W: The repository 'http://security.ubuntu.com/ubuntu zesty-security Release' does not have a Release file.
W: The repository 'http://archive.ubuntu.com/ubuntu zesty Release' does not have a Release file.
W: The repository 'http://archive.ubuntu.com/ubuntu zesty-updates Release' does not have a Release file.
W: The repository 'http://archive.ubuntu.com/ubuntu zesty-backports Release' does not have a Release file.
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/zesty-security/universe/source/Sources 404 Not Found [IP: 91.189.91.23 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/zesty/universe/source/Sources 404 Not Found [IP: 91.189.88.161 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/zesty-updates/universe/source/Sources 404 Not Found [IP: 91.189.88.161 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/zesty-backports/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
This looks like a Ubuntu problem rather than a Docker problem. Is there a workaround?