[WIP] Update gitlab and gitlab-shell repos in Makefile

AFAIK, currently there is no reference how to update the source files of gitlab and gitlab-shell. I gave this a brief test and it works. If anyone can also test this it would be cool. If we decide to merge it, a section in README will be added as well.

Nice idea @axil . Maybe do git pull --ff-only (or whatever it's called) to avoid unwanted git messes?

I can see make update failing quickly if your working area is in the middle of something, which I think is good. You changed something, make update fails, you fix it. No magic.

Am I right about make update failing quickly?

Haven't thought of this but it makes sense :) Otherwise, could we do it like the upgrader script: stash any changes, checkout to master and pull?

for stashing. Sometimes I walk away from my development checkout in the middle of something and then I rely on the state of the working directory to remind me of what I was doing. I don't want that reminder to get stashed, leading me to forget. :)

Added 2 new commits:

• 2d05314c - Add --ff-only for pull.
• 1101a3a3091 - Add an update section in README.

Added 1 new commit:

• 01378040 - Add an update section in README.

I updated it to use --ff-only and tested it but I stumbled on another issue. Although the pull is successfully performed, gitlab/.bundle is not invoked. Also running it alone, returns make: 'gitlab/.bundle' is up to date.. I'm not very familiar with makefiles, is there something I'm missing?

It's a hack. We use the existence of gitlab/.bundle as a trigger to avoid running bundle install all the time.

Maybe just add a plain cd gitlab && bundle install in the update: block? It should detect all the proper bundler settings.

Added 2 new commits:

• 0c935a41 - Call bundle install explicitly on update.
• 2dbdb5a0 - Postgres needs to be running during update.

Ok, now update calls bundle install explicitly. I had a thought to touch Gemfile.lock in order to change its timestamp and tried to add it as a dependency to gitlab/.bundle, but it kept invoking bundle install although the timestamp kept unchanged, so I gave up :/

Added 1 new commit:

• b8c5b321 - Fix typo leading entering in wrong directory.

Thanks @axil !