diff --git a/platform/wab/Dockerfile.bootstrap b/platform/wab/Dockerfile.bootstrap
new file mode 100644
index 000000000..011696023
--- /dev/null
+++ b/platform/wab/Dockerfile.bootstrap
@@ -0,0 +1,12 @@
+# Dockerfile for Bootstrap task
+# Layers canvas-packages/hostlessList.json on top of the deployed WAB image
+# so that BootstrapHostless.ts can read it at /app/canvas-packages/hostlessList.json
+#
+# Usage: docker build --build-arg BASE_IMAGE=<deployed-wab-image> ...
+
+ARG BASE_IMAGE
+FROM ${BASE_IMAGE}
+
+# Copy hostless package list and build artifacts needed by BootstrapHostless.ts
+COPY canvas-packages/hostlessList.json /app/canvas-packages/hostlessList.json
+COPY canvas-packages/build-server/ /app/canvas-packages/build-server/