docker_ubuntu unexpectedly alters Ansible environment

[gotgenes]

I must execute docker_ubuntu role with become: yes because it requires administrative privileges to do the tasks. The final task in docker_ubuntu performs a setup action, which alters variables. In my case, tasks in roles following the docker_ubuntu role needed to use the HOME environment variable, but the call to setup caused my environment to be set to root's environment (and therefore, HOME to be set to /root).

Is there a way to avoid calling setup, or at the very least, can it please be much more tightly restricted (see the available options for setup)? I don't understand to what this docker.io relates. It appears to be a deprecated name for the Docker package. If it is, could this please be removed entirely?

[angstwad]

Setup was introduced in #63 to make sure that it picks up the latest facts from the system post install.

I'd take a PR that allows one to disable the setup call, with the default being keeping existing functionality.

Alternatively you could run setup after this role runs as the user you desire.