Flectra3 Docker build fails

[sicaps]

This is the error message I got following the instructions on docker hub.

(base) macbookpro@Awesome-MacBook-Pro-2 ~/CodingLab/flectra/2.0 (3.0●)$ docker run -p 7073:7073 --name flectra3 --link db:db -t flectrahq/flectra:3.0
2024-02-22 22:29:02,606 1 INFO ? flectra: Flectra version 3.0alpha
2024-02-22 22:29:02,607 1 INFO ? flectra: Using configuration file at /etc/flectra/flectra.conf
2024-02-22 22:29:02,607 1 INFO ? flectra: addons paths: ['/opt/flectra/server/flectra/addons', '/opt/flectra/server/addons', '/mnt/extra-addons']
2024-02-22 22:29:02,607 1 INFO ? flectra: database: flectra@172.17.0.3:5432
2024-02-22 22:29:03,562 1 INFO ? flectra.addons.base.models.ir_actions_report: Will use the Wkhtmltopdf binary at /usr/local/bin/wkhtmltopdf
Traceback (most recent call last):
File "/usr/bin/flectra-bin", line 8, in
flectra.cli.main()
File "/opt/flectra/server/flectra/cli/command.py", line 66, in main
o.run(args)
File "/opt/flectra/server/flectra/cli/server.py", line 179, in run
main(args)
File "/opt/flectra/server/flectra/cli/server.py", line 172, in main
rc = flectra.service.server.start(preload=preload, stop=stop)
File "/opt/flectra/server/flectra/service/server.py", line 1402, in start
rc = server.run(preload, stop)
File "/opt/flectra/server/flectra/service/server.py", line 577, in run
self.start(stop=stop)
File "/opt/flectra/server/flectra/service/server.py", line 531, in start
self.http_spawn()
File "/opt/flectra/server/flectra/service/server.py", line 511, in http_spawn
t.start()
File "/usr/lib/python3.10/threading.py", line 935, in start
_start_new_thread(self._bootstrap, ())
RuntimeError: can't start new thread
(base) macbookpro@Awesome-MacBook-Pro-2 ~/CodingLab/flectra/2.0 (3.0●)$

What's missing?

Thanks.