Instead of running dynamodb-local in docker I was able to run it like this.
filename=dynamodb_local_latest.tar.gz
# download the latest version of DynamoDB Local
curl -O https://d1ni2b6xgvw0s0.cloudfront.net/v2.x/$filename
tar -xvzf $filename
rm $filename
# run DynamoDB Local as a background process
java -jar DynamoDBLocal.jar &