Closed issue by the-antz on void-packages repository

https://github.com/void-linux/void-packages/issues/30056

Description:
### System

* xuname:  
Void 5.11.11_1 x86_64 AuthenticAMD/VM uptodate rF
* package:  
docker-20.10.5_1
docker-cli-20.10.5_1

The recent update seems to have broken the bash-completion for docker.

I downgraded, then it worked again, then updated back to v20 and it still worked but only in the terminal in which I did the update (post install trigger?), making it easy to miss when testing.

With v20 the docker bash-completion is now in  
`/usr/share/bash-completion/completions/docker-cli` instead of  
`/usr/share/bash-completion/completions/docker`  
which seems to be the cause for the bug.

I was able to workaround it by softlinking `docker-cli` to `docker`.