Fix fish autocompletion with custom ps output
Fix fish autocompletion with custom ps output

In the docker config.json, if `psFormat` or `imagesFormat` is set to a
non-standard format, it breaks autocompletion.

This fixes the issue by using a custom format.

Signed-off-by: Chris Gibson <711c73f64afdce07b7e38039a96d2224209e9a6c@chrisg.io>

redpanda/cli,docker/cli,redpanda/cli,Zebrilee/cli,ashfall/cli,Zebrilee/cli,dnephin/cli,cpuguy83/cli,docker/cli,e11137/cli,cpuguy83/cli,thaJeztah/cli,allencloud/cli,thaJeztah/cli,dnephin/cli,ashfall/cli,e11137/cli,riyazdf/cli,allencloud/cli,riyazdf/cli