Practical for running AWS cli on your build server.
usage:
docker run \
--env AWS_ACCESS_KEY_ID=$AWS_ACCESS_KEY_ID \
--env AWS_SECRET_ACCESS_KEY=$AWS_SECRET_ACCESS_KEY \
--env AWS_DEFAULT_REGION=$AWS_DEFAULT_REGION \
efio/awscli \
aws ec2 describe-instances --filters "Name=instance-type,Values=t3.micro" --query "Reservations[].Instances[].InstanceId"