simplified DynamoDB-related Docker images

Author: cer

dynamodblocal-init/Dockerfile

@@ -1,7 +1,7 @@
-FROM ubuntu:18.04
-RUN apt-get update && apt-get install -y python && apt-get install -y wget && wget https://bootstrap.pypa.io/get-pip.py && python get-pip.py
+FROM python:2.7.16-alpine3.9
 RUN pip install awscli --upgrade
 COPY create-dynamodb-tables.sh .
 COPY ftgo-order-history.json .
 COPY wait-for-dynamodblocal.sh .
+RUN chmod +x *.sh
 CMD ./wait-for-dynamodblocal.sh && ./create-dynamodb-tables.sh

dynamodblocal-init/create-dynamodb-tables.sh

@@ -1,4 +1,4 @@
-#! /bin/bash -e
+#! /bin/sh -e
 
 echo Initializing DynamoDB at endpoint ${AWS_DYNAMODB_ENDPOINT_URL}
 

dynamodblocal-init/wait-for-dynamodblocal.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 
 done=false
 

dynamodblocal/Dockerfile

@@ -1,8 +1,2 @@
-FROM openjdk:7-jre
-
-# Default port for DynamoDB Local
-EXPOSE 8000
-RUN mkdir /var/dynamodb_local && (wget -q -O - https://s3-us-west-2.amazonaws.com/dynamodb-local/dynamodb_local_latest.tar.gz | tar -xzf - )
-
-# Default command for image
-CMD /usr/bin/java ${JAVA_OPTS} -Djava.library.path=. -jar DynamoDBLocal.jar -dbPath /var/dynamodb_local -sharedDb -port 8000
+FROM amazon/dynamodb-local:1.11.477
+ENTRYPOINT java -jar DynamoDBLocal.jar -inMemory -sharedDb -port 8000