diff --git a/runtime/opt/taupage/runtime/Docker.py b/runtime/opt/taupage/runtime/Docker.py
index c8c4f03..02c9da4 100755
--- a/runtime/opt/taupage/runtime/Docker.py
+++ b/runtime/opt/taupage/runtime/Docker.py
@@ -306,7 +306,16 @@ def main(args):
         logging.error("Failed to list existing docker containers: %s", str(e))
         # not a fatal error, continue
 
-    if not already_exists:
+    if already_exists:
+        try:
+            cmd = ['docker', 'start', 'taupageapp']
+            logging.info('Starting existing Docker container: {}'.format(cmd))
+            if not args.dry_run:
+                subprocess.check_output(cmd)
+        except Exception as e:
+            logging.error('Docker start of existing container failed: %s', str(e))
+            sys.exit(1)
+    else:
         registry = extract_registry(source)
 
         if registry: