diff --git a/.github/workflows/dockerbuild.yml b/.github/workflows/dockerbuild.yml
new file mode 100644
index 0000000..69eebad
--- /dev/null
+++ b/.github/workflows/dockerbuild.yml
@@ -0,0 +1,20 @@
+name: ci
+
+on:
+  pull_request:
+    branches:
+      - main
+
+# see https://docs.github.com/en/packages/managing-github-packages-using-github-actions-workflows/publishing-and-installing-a-package-with-github-actions#publishing-a-package-using-an-action
+jobs:
+  build-image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85
+        with:
+          context: src/
+          push: false