docs: def copy_sig(sig, opts, isdiff):
      """Deploy a sig"""
      info("[+] \033[92mDeploying signature:\033[0m %s" % sig)
      if isdiff:
          sourcefile = os.path.join(opts.workdir, '%s.cdiff' % sig)
          destfile = os.path.join(opts.mirrordir, '%s.cdiff' % sig)
      else:
          sourcefile = os.path.join(opts.workdir, '%s.cvd' % sig)
          destfile = os.path.join(opts.mirrordir, '%s.cvd' % sig)
      deploy_signature(sourcefile, destfile, opts.user, opts.group)
      info("=> Deployed signature: %s" % sig)