[SYSTEMDS-3270][DOCS] Docker usage documentation (#1501)

docs/site/docker.md

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+---
+layout: site
+title: Use SystemDS with Docker
+---
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+{% comment %}
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+http://www.apache.org/licenses/LICENSE-2.0
+
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+-->
+
+
+[Docker](https://docs.docker.com/get-docker/) enables you to separate applications from
+your infrastructure. This provides a way to manage the instrafrastructure the same way
+you do with the software.
+
+With Docker, enabling GPU support would be much easier on linux. Since only the NVIDIA
+GPU drivers are required on the host machine (NVIDIA CUDA toolkit is not required).
+
+## SystemDS Docker requirements
+
+Install [Docker](https://docs.docker.com/get-docker/) specific to your machine
+
+Note: If you would like to manage docker as a non-root user, refer to
+[linux-postinstall](https://docs.docker.com/engine/install/linux-postinstall/)
+
+## Download SystemDS Docker image
+
+The official SystemDS docker images are located at [apache/systemds](https://hub.docker.com/r/apache/systemds)
+Docker Hub repository. Image releases are tagged based on the release channel:
+
+| Tag | Description |
+| --- | --- |
+| `nightly` | Builds for SystemDS `main` branch. Used by SystemDS developers |
+
+
+Usage examples:
+
+```sh
+docker pull apache/systemds:nightly         # Nightly release with CPU
+```
+
+### Start the Docker container
+
+
+Options:
+
+- `-it` - interactive
+- `--rm` - cleanup
+- `-p` - port forwarding
+
+For comprehensive guide, refer [`docker run`](https://docs.docker.com/engine/reference/run/)
+
+```sh
+
+docker run [-it] [--rm] [-p hostPort:containerPort] apache/systemds[:tag] [command]
+```
+
+#### Examples
+
+To verify the SystemDS installation,
+
+Create a `dml` file, for example
+
+```sh
+touch hello.dml
+
+cat <<EOF >>./hello.dml
+print("This is SystemDS")
+EOF
+```
+and run it.
+
+```sh
+docker run -it --rm -v $PWD:/tmp -w /tmp apache/systemds:nightly systemds ./hello.dml
+```
+
+The output is `"This is SystemDS"` after successful installation.
+For SystemDS usage instructions, see [standalone instructions](./run).
+
+
+This way you can run a DML program developed on the host machine, mount the host directory and change the
+working directory with [`-v` flag](https://docs.docker.com/engine/reference/run/#volume-shared-filesystems)
+and [`-w` flags](https://docs.docker.com/engine/reference/run/#workdir).
+
+