Docker provides standardized mechanisms to run docker containers as non-root users.

#### GNU/Linux and macOS (regular user)

On Linux and macOS you can use `--user` to run the container as regular user.

> NOTE: make sure --user has write permission to *${HOME}/data* prior to using `--user`.

```sh
mkdir -p ${HOME}/data
docker run \
  -p 9000:9000 \
  -p 9001:9001 \
  --user $(id -u):$(id -g) \
  --name minio1 \

Example: Limit a MinIO cluster to accept at max 1600 simultaneous S3 API requests across all nodes of the cluster.

```sh
export MINIO_API_REQUESTS_MAX=1600

For testing purposes, here is [how to create self-signed certificates](https://github.com/minio/minio/tree/master/docs/tls#3-generate-self-signed-certificates).

Test the Spark installation by running the following compute intensive example, which calculates pi by “throwing darts” at a circle. The program generates points in the unit square ((0,0) to (1,1)) and counts how many points fall within the unit circle within the square. The result approximates pi.

Follow these steps to run the Spark Pi example:

- Login as user **‘spark’**.

> ```
>
> Please make sure this step is carried out, without this step PostgreSQL notification targets will not work,
> an error message will be shown on the console upon server upgrade/restart, make sure to follow the above
> instructions appropriately. For further questions please join our <https://slack.min.io>

**NOTE:**