second first commit

compatibility-tests/compat-cdk/docker-fn/Dockerfile

@@ -0,0 +1,3 @@
+FROM public.ecr.aws/lambda/nodejs:20
+COPY index.js ${LAMBDA_TASK_ROOT}/
+CMD ["index.handler"]

compatibility-tests/compat-cdk/docker-fn/index.js

@@ -0,0 +1,10 @@
+exports.handler = async (event) => {
+  const name = (event && event.name) ? event.name : "Floci";
+  return {
+    statusCode: 200,
+    body: JSON.stringify({
+      message: `Hello, ${name}! (from CDK DockerImageFunction via emulated ECR)`,
+      received: event,
+    }),
+  };
+};