this command will route all containers outputs to s3 bucket:
docker run --name logger -d -e AWS_KEY=key \
-e AWS_SECRET=secret \
-e S3_REGION=us-east-1 \
-e S3_BUCKET=mybucket \
-e S3_PATH=logs \
-v /var/lib/docker/containers:/var/lib/docker/containers \
-v /var/log/docker:/var/log/docker \
tmuskal/fluentd-s3