docker dynamodb -sharedDb option

Question

I'm trying to start dynamodb on localhost via, using official repo

I tried the following

docker run -p 8000:8000 amazon/dynamodb-local -sharedDb
docker run -p 8000:8000 amazon/dynamodb-local --sharedDb
docker run -p 8000:8000 amazon/dynamodb-local --sharedDb --dbPath=/usr/local/var/dynamodb
docker run -p 8000:8000 amazon/dynamodb-local -sharedDb -dbPath=/usr/local/var/dynamodb
docker run -p 8000:8000 amazon/dynamodb-local -sharedDb -dbPath /usr/local/var/dynamodb

and I just get the following message

Unrecognized option: -sharedDb
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

or

Unrecognized option: -dbPath
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

How do I pass options to dynamodb? I took those from official docs

Answer 1

The Compose samples in the AWS docs look like the image is configured with ENTRYPOINT ["java"], so you have to start the options (the command string) with -jar DynamoDBLocal.jar to tell the JVM what to run.

docker run -p 8000:8000 amazon/dynamodb-local \
  -jar DynamoDBLocal.jar -sharedDb