Uses defer and listens for SIGTERM
As well as doing some other nice cleanup.

This will also no longer leave backup files in the
mw directory which is nice :)

Bug: T291529

Covers T282360

For now we don't need this, and we can always add
it back later

Had an extra $ that was missed and not needed

Addshore authored Sep 16, 2021 and Addshore committed Sep 16, 2021

This was prep work for maybe taking a look at T284227

Bug: T282337

Bug: T282337

Bug: T282337

Bug: T282352 (#282352)

Addshore authored Sep 10, 2021 and Addshore committed Sep 10, 2021

Bug: T288441 (#288441)

This is now fully handeled by the docker daemon
on the gitlab runner instead...

Require users to always specify the DB type that they want to
install, to avoid people using sqlite by default perhaps, and
then encountering T287654.

Also if people do choose sqlite, then end the install step
with a WARNING to them, linking to the phab ticket.

Bug: T287654

Addshore authored Sep 09, 2021 and Addshore committed Sep 09, 2021

Bug: T290668

Addshore authored Sep 09, 2021 and Addshore committed Sep 09, 2021

Bug: T290663