Use dumb-init in Dockerfile; chown tracker directory to proper uid Use dumb-init so proceses started from Roundup get properly reaped if they exit after the Roundup server instance. Also chown the tracker mount directory to the specified uid/gid.

try:
    # Python 3+.
    from xmlrpc import client, server
    server.SimpleXMLRPCDispatcher
except (ImportError, AttributeError):
    # Python 2.
    import xmlrpclib as client  # noqa: F401
    import SimpleXMLRPCServer as server