diff --git a/.github/workflows/dockerimage.yml b/.github/workflows/dockerimage.yml
index a9f6bc1..c06720d 100644
--- a/.github/workflows/dockerimage.yml
+++ b/.github/workflows/dockerimage.yml
@@ -1,6 +1,6 @@
 name: Test Docker image
 
-on: [push, pull_request]
+on: [push, pull_request, workflow_dispatch]
 
 jobs:
   build: