Error during building the server docker container on ubuntu 18.04

[shashwat1198]

Hello,

During server installation for nuke-ml-server on ubuntu 18.04, I get the following error when I run this commad :

sudo docker build -t mlserver -f Dockerfile .

ERROR :

WARNING: Discarding https://files.pythonhosted.org/packages/4a/85/db5a2df477072b2902b0eb892feb37d88ac635d36245a72a6a69b23b383a/PyYAML-3.12.tar.gz#sha256=592766c6303207a20efc445587778322d7f73b161bd994f227adaa341ba212ab (from https://pypi.org/simple/pyyaml/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement pyyaml==3.12 (from versions: 3.10, 3.11, 3.12, 3.13b1, 3.13rc1, 3.13, 4.2b1, 4.2b2, 4.2b4, 5.1b1, 5.1b3, 5.1b5, 5.1, 5.1.1, 5.1.2, 5.2b1, 5.2, 5.3b1, 5.3, 5.3.1, 5.4b1, 5.4b2, 5.4, 5.4.1, 6.0b1, 6.0, 6.0.1)
ERROR: No matching distribution found for pyyaml==3.12

This error comes as part of the requirements installation for the 'detectron' repository : https://github.com/facebookresearch/Detectron/blob/main/requirements.txt

If you can give me any pointers on how to solve this that would be very helpful!

Kind regards,
Shashwat