UnknownEndpoint Inaccessible host: 'localhost' at port '8000' with sam node.js

Question

AWS.config.update({
  accessKeyId: 'a',
  secretAccessKey: 'a',
  region: "us-east-1",
  endpoint: "http://dynamodb-local:8000"
  // endpoint: "http://localhost:8000"
  // endpoint: "http://docker.for.windows.localhost:8000"
});