Add update procedure in README

[baldover]

Hi, first off I can't thank you enough for this script it saved me a ton of headaches.
In issue #88 I understand a script would require more maintenance.
How about procedures instead?

[PrivatePuffin]

I used this work as my basis for jailmanager/jailman. Actually updating this work as one of my reasons to start JailMan to begin with:

Updating can as be easy as:

• pkg update
• update caddy
• update nextcloud

Or it can be very involved because the dependencies changed etc.

With JailMan I seperated the personal config (For example: your jail IP, admin password etc), from the blueprint config (such as the PKGS to install) and made the blueprint (install script) user agnostic. Simply put: It doesn't contain any user specific config. This way we can push an update and users don't have to do anything except run it.

But even then I can't guarantee users don't need to update their personal config files once in a while. Making update and install scripts (certainly those that are user agnostic) becomes increasingly more difficult the larger they become.

But above all:
People expect that you support what you publish.

If Dan would do this he would need to keep it up-to-date and people would expect it to "just work". If we take into account how much work it already is to keep the install script working.

How about a procedure?
An sh script is already a "procedure", in its basic form it only says: "Download this", "Run this".
A procedure really isn't much different from a support point of view (just the syntax is). The only difference is that errors are less clear and usererror is even more likely.

Also: Documentation is a HUGE burden. I'm guilty of that.
It's that much of a burden, that I even skipped creating a tracker for documentation todo's. Writing good documentation can be as much work or more than creating and maintaining scripts.

My current documentation backlog is (I guess) about 40 manhours.

I hope this give your some insight in the choices made by a script-developer that has included updating and why one wouldn't do it.