How to best send command line args to local dynamodb docker container

Sorry if this is the wrong git repo - I couldn’t find where the dockerfile for amazon/dynamodb-local was being maintained.

2 questions here:

1. Currently, to send command line args as described here https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBLocal.UsageNotes.html it looks like I need to send the full args to the java process instead of just the args to configure the dynamodb server. So instead of running docker run -it --rm amazon/dynamodb-local -sharedDb I need to run docker run -it --rm amazon/dynamodb-local -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb Would it be possible to change the entrypoint/cmd of the dockerfile to handle the java args for you and the user just pass in the extra arguments? I think the more common use case is to just specify the dynamodb args, but if a user wanted to modify the java args they should be able to override the entrypoint in their own docker run

2. What directory in the container should I mount if I want to persist the .db file?

[hounded]

Great work @dferretti-fig ! for those that want it I have created a docker-compose file off those findings

version: '3'

services:
  dynamo:
    image: amazon/dynamodb-local
    environment:
      - ./Djava.library.path=./DynamoDBLocal_lib
    ports:
      - "8000:8000"
    volumes:
      - <directory>:/home/dynamodblocal/data
    working_dir: /home/dynamodblocal
    command: ["-jar", "DynamoDBLocal.jar", "-sharedDb", "-dbPath", "./data"]

[dferretti]

After some digging, I found the directory at /home/dynamodblocal, so to answer the second question, here is how I currently handle persisting my local dynamodb tables:

docker run -it --rm -v %cd%:/home/dynamodblocal/data -p 8000:8000 amazon/dynamodb-local -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb -dbPath ./data