Use thread flags to block brew worker thread when not brewing

Status Job ID Name Coverage
  Setup
manual #190175288
allowed to fail manual
build-docker
 
  Build
failed #190175289
build

00:00:58

 
Name Stage Failure
failed
build Build
From https://gitlab.com/burgerman/espresso-for-geeks
* [new branch] master -> origin/master
* [new branch] test -> origin/test
Checking out c79ee807 as test...

Skipping Git submodules setup
$ make
make: *** No targets specified and no makefile found. Stop.
ERROR: Job failed: exit code 1