Docker Composer Persist Local Dynamo

docker-compose.yml

version: "1"
services:
  dynamodb_local:
    container_name: "dynamodb_local"
    image: "amazon/dynamodb-local:latest"
    ports:
      - "8000:8000"
    command:
      ["-jar", "DynamoDBLocal.jar", "-sharedDb", "-dbPath", /tmp/dynamolocal]
    volumes:
      - /Users/seansullivan/dynamolocal/data:/tmp/dynamolocal