+ docker pull ubuntu:questing questing: Pulling from library/ubuntu 16c195d4c5e9: Pulling fs layer 16c195d4c5e9: Verifying Checksum 16c195d4c5e9: Download complete 16c195d4c5e9: Pull complete Digest: sha256:4a9232cc47bf99defcc8860ef6222c99773330367fcecbf21ba2edb0b810a31e Status: Downloaded newer image for ubuntu:questing docker.io/library/ubuntu:questing
