fix / ensure WEB_PORT is correctly set when parsing WEB_URL

[vic-en]

addresses issue #67

[nikspz]

hi Vic this PR resolves current issue with ERROR: [Errno 13] error while attempting to bind on address ('0.0.0.0', 80): [errno 13] permission denied
and (traceback: condor/.venv/lib/python3.13/site-packages/uvicorn/server.py", line 182, in startup sys.exit(1) ~~~~~~~~^^^ SystemExit: 1 make: *** [Makefile:56: run] Error 1)

however it fails to connect to /web and returns ERR_CONNECTION_TIMED_OUT

David mentioned it works on his PR #71

Could you please check and add the fix? @vic-en

[vic-en]

@nikspz I pushed the commit to address the last comment.