revert the index.rst code (#1156)

Co-authored-by: pyansys-ci-bot <[email protected]>

Author: subhnayak

doc/changelog.d/1156.miscellaneous.md

@@ -0,0 +1 @@
+Revert the index.rst code

doc/source/getting_started/index.rst

@@ -99,3 +99,169 @@ To launch PyPrimeMesh, use this code:
 
    with prime.launch_prime() as prime_client:
        model = prime_client.model
+
+Launching PyPrimeMesh through docker
+------------------------------------
+
+Ansys Prime Server is capable of being launched through docker. 
+Docker is an open platform for developing, shipping, and running apps in a containerized way.
+Containers are standard units of software that package the code and all its dependencies.
+Hence, the app runs quickly and reliably from one computing environment to another.
+
+Ansys Prime Server can be built as a Linux Docker container.
+Hence, you should have a linux machine to run the Ansys Prime Server.
+
+Docker for Linux containers
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+To run the Linux Docker container for the Ansys Prime Server, 
+ensure that you follow these steps when installing the Docker:
+
+1.	Install `Docker Engine <https://docs.docker.com/engine/install/rhel/>`_.
+
+2.	Restart your machine and start Docker Engine after completing the installation.
+
+Your Docker engine supports running Linux Docker containers, you can build or install the Ansys Prime Server image.
+
+.. note::
+Ansys Prime Server uses Intel MPI library for performing meshing operations. Intel MPI library requires NUMA support.
+Docker desktop allows to run linux containers on windows using WSL. Existing Linux distributions used for WSL do not typically support NUMA.
+It is expected that a custom Linux distribution would be required for WSL to run the Ansys Prime Server container to support NUMA.
+Ansys does not recommend you to run the Ansys Prime Server image without NUMA support.
+
+Build or install the Ansys Prime Server image
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+You can install the Ansys Prime Server image in the following ways:
+
+•	Download it from the GitHub Container Registry.
+
+•	Build the Ansys Prime Server Linux container.
+
+
+GitHub container registry
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. note::
+You should have write access to the repository or should be a members of the Ansys organization.
+
+After installing Docker on your machine, follow these steps to download the Linux Docker container
+for the Ansys Prime Server and install this image.
+
+1.	Download the Docker image from the `PyPrimeMesh repository <https://github.com/ansys/pyprimemesh>`_ on GitHub using your GitHub credentials.
+2.	Use a GitHub personal access token with permission for reading packages to authorize Docker to access the PyPrimeMesh repository. For more information, see `Managing your personal access tokens <https://docs.github.com/en/authentication/keeping-your-account-and-data-     secure/managing-your-personal-access-tokens>`_ in the GitHub documentation.
+3.	Save the token to a file using this command:
+
+   .. code-block:: pycon
+
+      echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > GH_TOKEN.txt
+
+4.	Authorize Docker to access the repository and run the commands for your OS. 
+
+   **Linux:**
+
+      .. code-block:: pycon
+         
+         setenv GH_USERNAME <your_github_username>
+         cat GH_TOKEN.txt | docker login ghcr.io -u $GH_USERNAME --password-stdin
+
+5.	Pull the Ansys Prime Server locally using Docker using the following command:
+
+   .. code-block:: pycon
+
+        docker pull ghcr.io/ansys/prime:25.2.0
+
+
+Build the Ansys Prime Server linux container
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   
+
+You can build the Ansys Prime Server Docker containers from the PyPrimeMesh repository docker folder.
+The docker folder has the linux/Dockerfile that builds the Linux-based Docker image.
+
+.. note::
+   Ansys Prime Server does not support building windows-based docker images.
+
+You can build the docker image file as follows: 
+
+•	**Build from available Ansys installation**: Builds the Docker image using the Ansys installation available in the machine where the Docker image is being built.
+
+Prerequisites
+''''''''''''''
+
+Ensure that Docker is installed in your machine. If you do not have Docker available, see :ref:`Docker for Linux containers <Docker for Linux containers>`.
+
+
+Build from available Ansys installation
+''''''''''''''''''''''''''''''''''''''''
+
+To build your own image from your Ansys installation, follow these instructions:
+
+1. Go to the Docker folder in your local PyPrimeMesh repository.
+
+2.	Execute the script with the following command (no specific location needed):
+
+  .. code-block:: pycon
+
+     python build_docker_linux.py <ANSYS_INSTALLATION_PATH>
+
+For example,
+
+   .. code-block:: pycon
+
+      $AWP_ROOT252/commonfiles/CPython/3_10/linx64/Release/python/bin/python  build_docker_linux.py $AWP_ROOT252
+
+3. Check that the image has been created successfully. 
+
+You can view the docker image created with latest tag as follows:
+
+.. figure:: ../images/docker_image.png
+  :width: 800pt
+  :align: center
+
+Launch the Ansys Prime Server
+''''''''''''''''''''''''''''''
+
+Ansys Prime Server can be launched using the PyPrimeMesh launcher.
+You should set the following mandatory environment variable for launching the Ansys Prime Server:
+
+- PYPRIMEMESH_LAUNCH_CONTAINER: Launches the Ansys Prime Server form the PyPrimeMesh container.
+
+- PYPRIMEMESH_IMAGE_TAG: Latest version of the Ansys Prime Server docker image.
+
+- ANSYSLMD_LICENSE_FILE: License server required for launching the Ansys Prime Server.
+
+Setting the environment variable
+'''''''''''''''''''''''''''''''''
+
+Define the following general environment variables prior to using the Ansys Prime Server launcher. 
+
+**Linux**
+
+   .. code-block:: pycon
+
+      export PYPRIMEMESH_LAUNCH_CONTAINER=1
+      export PYPRIMEMESH_IMAGE_TAG=<latest>
+      export ANSYSLMD_LICENSE_FILE=<valid license server>
+
+.. note::
+   PyPrimeMesh supports Docker image creation from 2025 R1 version.
+
+Launching Ansys Prime Server 
+''''''''''''''''''''''''''''''
+Ensure that you have installed ``ansys-meshing-prime`` package before launching Ansys Prime Server. 
+To install ``ansys-meshing-prime`` package, refer :ref:`Installation`.
+Ansys Prime Server can be launched as follows:
+
+.. code-block:: pycon
+
+   >>> from ansys.meshing import prime
+   >>> client = prime.launch_prime()
+   >>> model = client.model
+
+
+
+
+
+
+
+
+