Add missing Jinja2 configuration

1 job from main in 11 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #63
unittests

00:11

 
Test unittests
HEAD is now at d11db41 Switch to Jinja2 templating, fix config and work on gunicorn conf
From http://git.0x39b.fr/twili/trans-cec
d11db41..d658b36 main -> origin/main
Checking out d658b361 as main...
Skipping Git submodules setup
Skipping cache extraction due to empty cache key
$ pip install -r requirements.txt
bash: line 56: pip: command not found
ERROR: Job failed: exit status 1