Docker build error

[nikto-b]

Can't build a docker container from master

Collecting update-checker>=0.11
  Downloading update_checker-0.18.0.tar.gz (6.7 kB)
    ERROR: Command errored out with exit status 1:
     command: /usr/local/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-zjybW6/update-checker/setup.py'"'"'; __file__='"'"'/tmp/pip-install-zjybW6/update-checker/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-zjybW6/update-checker/pip-egg-info
         cwd: /tmp/pip-install-zjybW6/update-checker/
    Complete output (6 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-zjybW6/update-checker/setup.py", line 9
        with open(f"{MODULE_NAME}.py") as fp:
                                    ^
    SyntaxError: invalid syntax
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
WARNING: You are using pip version 20.0.2; however, version 20.3.4 is available.
You should consider upgrading via the '/usr/local/bin/python -m pip install --upgrade pip' command.
The command '/bin/sh -c pip install dist/*' returned a non-zero code: 1