adds wait script

.github/workflows/test.yml

@@ -26,6 +26,7 @@ jobs:
           export AWS_ACCESS_KEY_ID="DUMMYIDEXAMPLE"
           export AWS_SECRET_ACCESS_KEY="DUMMYEXAMPLEKEY"
           export AWS_SESSION_TOKEN="dummy"
+          ./docker/wait-for-db.sh
           aws dynamodb create-table \
             --region eu-west-1 \
             --table-name clients \

docker/wait-for-db.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+export AWS_ACCESS_KEY_ID="DUMMYIDEXAMPLE"
+export AWS_SECRET_ACCESS_KEY="DUMMYEXAMPLEKEY"
+export AWS_SESSION_TOKEN="dummy"
+until aws --region us-east-1 --endpoint-url=http://localhost:8000 dynamodb list-tables; do
+  >&2 echo "DynamoDB is unavailable - sleeping"
+  sleep 1
+done
+
+echo "DynamoDB is available"