Is it possible to make Q builds using Docker?

Getting an error

>> [Wed Sep 30 11:45:04 UTC 2020] Branch:  v1-q
>> [Wed Sep 30 11:45:04 UTC 2020] Devices: chiron,
>> [Wed Sep 30 11:45:04 UTC 2020] (Re)initializing branch repository
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 32517  100 32517    0     0   172k      0 --:--:-- --:--:-- --:--:--  173k
>> [Wed Sep 30 11:45:05 UTC 2020] Copying '/srv/local_manifests/*.xml' to '.repo/local_manifests/'
Traceback (most recent call last):
  File "/root/build_manifest.py", line 61, in <module>
    f.write(xmlstr)
TypeError: write() argument must be str, not bytes
>> [Wed Sep 30 11:45:05 UTC 2020] Syncing branch repository
>> [Wed Sep 30 11:45:06 UTC 2020] Missing "vendor/lineage", aborting

Build command was

sudo docker run \
-v "/srv/e/src:/srv/src" \
-v "/srv/e/zips:/srv/zips" \
-v "/srv/e/logs:/srv/logs" \
-v "/srv/e/manifests:/srv/local_manifests" \
-v "/srv/e/userscripts:/srv/userscripts" \
-v "/srv/e/ccache:/srv/ccache" \
-e "CCACHE_SIZE=200G" \
-e "BRANCH_NAME=v1-q" \
-e "DEVICE_LIST=chiron" \
-e "REPO=https://gitlab.e.foundation/e/os/releases.git" \
registry.gitlab.e.foundation:5000/e/os/docker-lineage-cicd:community

Also tried with -e "BRANCH_NAME=v0.12-q" \ Same error

Building a nougat branch worked OK e.g.

-e "BRANCH_NAME=v0.11-nougat" \
-e "DEVICE_LIST=suzuran" \