PostgreSQL завис при перестроении

[merefield (Robert)]

Считаю это излишним и избыточным, см.:

Should the install guide tell people to run apt update & apt upgrade first?

My money is on the additional git pull is unnecessary, because of the code here: which seems to check the local version, updates and restarts the launcher if out of date (and a bunch of other things). Therefore only this should be necessary on subsequent rebuilds: cd /var/discourse ./launcher rebuild app without the redundant git pull. (NB: always good to dive into the source code so you can be more sure). (NB#2: have deleted my post above which just added to the confusion).