Local integration tests

To run locally:

1. Set up AWS credentials via the following environment variables:

   export AWS_ACCESS_KEY_ID=...
   export AWS_SECRET_ACCESS_KEY=...
   export AWS_SESSION_TOKEN=...
   

2. Set AWS_ROLE_ARN to the ARN of your AWS credentials' role, e.g.:

   export AWS_ROLE_ARN=arn:aws:iam::<ACCOUNT_ID>:role/<ROLE_NAME>
   

3. Run docker-compose. It will exit with error code 0 if successful:

   docker-compose up --build --exit-code lambda