Change amazon/dynamodb-local Port

Question

How can I change the port dynamodb starts on through the Amazon Docker image?

According to this answer, the -port option can be used when executing the dynamodb java file.

However, when running the docker image with this command: docker run -p 8000:8000 amazon/dynamodb-local I do not have the option of specifying the port dynamodb listens to, just the port connected between my host and the container.

Would I have to make my own Dockerfile, specifying the OS and installing dynamodb and whatnot, so I can run the java command and specify my port?

Answer 1

I tried the official image to override entry point but there was some unknown error, But you can good to go with this approach. Just create a New Docker image from amazon/dynamodb-local as a base image. Build.

docker build -t mydb .

and run it

docker run -it --rm -p 8001:8001 mydb

Below is the Dockerfile

FROM amazon/dynamodb-local
WORKDIR /home/dynamodblocal
ENTRYPOINT ["java", "-jar", "DynamoDBLocal.jar", "-port", "8003"]

As you will see the port.