diff --git a/.github/workflows/publish-image.yml b/.github/workflows/publish-image.yml
new file mode 100644
index 0000000..ad21d9a
--- /dev/null
+++ b/.github/workflows/publish-image.yml
@@ -0,0 +1,22 @@
+name: publish-image
+
+# Publishes the scope image to ECR Public on every semver tag (created by the
+# release workflow). Result: public.ecr.aws/nullplatform/scopes/lambda:<version>
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  id-token: write   # required for OIDC auth against AWS
+  contents: read
+
+jobs:
+  publish:
+    uses: nullplatform/actions-nullplatform/.github/workflows/docker-build-push-ecr.yml@main
+    with:
+      image_name: scopes/lambda
+      context: .
+      tag: ${{ github.ref_name }}
+    secrets:
+      aws_role_arn: ${{ secrets.AWS_ROLE_ARN_ECR_PUSH }}