Add workflow_dispatch for test

.github/workflows/build-images.yaml

@@ -1,6 +1,35 @@
 name: build-images
 
 on:
+  workflow_dispatch:
+    inputs:
+      # 'skip' is kind of silly. it exists because we can't actually *skip* this job from e2e-test,
+      # otherwise the follow-up job that needs it wouldn't be able to run. So instead we pretend the
+      # job completed successfully, but actually do nothing...
+      skip:
+        description: 'Changes this action to perform a no-op'
+        type: boolean
+        required: false
+      tag:
+        description: 'Tag to use for the Docker images'
+        type: string
+        required: true
+      kernel-image:
+        description: 'Kernel image for the VMs embedded in neonvm-runner. If not specified, a kernel will be built from source'
+        type: string
+        required: false
+      build-cluster-autoscaler:
+        description: 'Build the custom cluster-autoscaler image'
+        type: boolean
+        required: false
+      controller-preserve-runner-pods:
+        description: 'ONLY USE FOR E2E TESTS: Set neonvm-controller to never delete VM runner pods'
+        type: boolean
+        required: false
+      upload-to-ecr:
+        description: 'Should images be uploaded to neon ECR'
+        type: boolean
+        required: false
   workflow_call:
     inputs:
       # 'skip' is kind of silly. it exists because we can't actually *skip* this job from e2e-test,