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[Linux][Debian, Ubuntu] Dependency on gnupg-agent

As of today Ubuntu installation instruction https://docs.docker.com/engine/install/ubuntu/ shows gnupg-agent as a required install item. I’m talking in a downstream community https://github.com/ros/rosdistro/pull/27597#pullrequestreview-547275496 and we found that that package only installs document. It does seems to depend on gpg-agent (*1) that installs actual meat.

Is there any reason why gnupg-agent is specifically needed? If not, can it be gpg-agent?

*1 Dependency on

$ apt-cache depends gnupg-agent
gnupg-agent
  Depends: gpg-agent
    gpg-agent:i386

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.5 LTS