daemonize httpd process

clair_singularity/cli.py

@@ -41,6 +41,7 @@ def cli(image, clair_uri, text_output, json_output, bind_ip, bind_port, quiet):
     # Start an HTTP server to serve the .tar.gz from our temporary directory
     # so that Clair can retrieve it
     httpd = Process(target=http_server, args=(tar_dir, bind_ip, bind_port, quiet))
+    httpd.daemon = True
     httpd.start()
     # Allow up to 30 seconds for the httpd to start and be answering requests
     httpd_ready = wait_net_service(bind_ip, bind_port, 30)

tests/test_image.py

@@ -46,6 +46,7 @@ def test_http_server(testimage, tmpdir):
     """Test we can retrieve the test image from in-built http server"""
     httpd = multiprocessing.Process(target=http_server,
                                     args=(os.path.dirname(testimage), '127.0.0.1', 8088, False))
+    httpd.daemon = True
     httpd.start()
     # Allow up to 30 seconds for the httpd to start and be answering requests
     httpd_ready = wait_net_service('127.0.0.1', 8088, 30)