Make debian package setup example more self explained

[6543]

As most users just copy the example code and the wonder why it did not work ... befor even thinking the shell vars in the example need to be filled with the info below ... just show them. and if there is no selection just return the only options directly

Screnshots outdated

multible

only one option available

mixed

[silverwind]

I'd make the variables uppercase, this is a common practice in shell scripts. For the variables I would do:

DISTRIBUTION="alpine" # "alpine", "other", "another"
COMPONENT="edge" # "edge", "other", "another"

The benefit is the script will work when copied, and it should be obvious what the options are.

Also, it'd be nice if we could syntax-highlight these instructions as bash, but doesn't have to be this PR.

[silverwind]

Can you remove the two # please select one: lines and the empty line between vars? It's obvious enough imho. I you want, you can add one of: a, b, c on the remaining comments.

[6543]

remaining comments?

what exactly do you propose, sorry dont get it rigt now :/