This error comes from running the dockerfile and reaches the PyQt5 in the requirements-dev.txt. From stackoverflow, this problem occur when installing PyQt5 with version after 5.15.6 in virtual environment.

Not labeling bug as it's bug from PyQt5, but since this could affect dockerfile building I'll create this issue.
If this is not proper please close this issue.

Reference: https://stackoverflow.com/questions/70936664/metadata-generation-failed-while-installing-pyqt5