docs: add air-gapped install (#393)

Added documentation to install module and dependencies in a air-gapped environment.

Signed-off-by: Jared Burns <burnsja@vmware.com>

docs/install.md

@@ -1,5 +1,7 @@
 # Installing the Module
 
+## From Powershell Gallery
+
 Verify that your system has a [supported edition and version](/power-validated-solutions-for-cloud-foundation/#powershell) of PowerShell installed.
 
 Install the PowerShell [module dependencies](/power-validated-solutions-for-cloud-foundation/#module-dependencies) from the PowerShell Gallery by running the following commands:
@@ -16,6 +18,56 @@ For example:
 --8<-- "./docs/snippets/import-module.ps1"
 ```
 
+## From Air-gapped Machine
+
+Verify that your system has a [supported edition and version](/powershell-module-for-vmware-cloud-foundation-password-management/#powershell) of PowerShell installed.
+
+=== ":fontawesome-brands-windows: &nbsp; Windows"
+
+    Save Modules [module dependencies](/powershell-module-for-vmware-cloud-foundation-password-management/#module-dependencies) from the PowerShell Gallery on a non air-gapped machine by running the following commands:
+
+    ```powershell
+    --8<-- "./docs/snippets/save-module-local-windows.ps1"
+    ```
+
+    Copy the PowerShell Modules [module dependencies](/powershell-module-for-vmware-cloud-foundation-password-management/#module-dependencies) from the Local Machine to air-gapped facing machine by running the following commands:
+
+    ```powershell
+    --8<-- "./docs/snippets/copy-module-local-windows.ps1"
+    ```
+
+    Import the PowerShell Modules [module dependencies](/powershell-module-for-vmware-cloud-foundation-password-management/#module-dependencies) from the air-gapped machine by running the following commands:
+
+    ```powershell
+    --8<-- "./docs/snippets/import-module.ps1"
+    ```
+
+=== ":fontawesome-brands-linux: &nbsp; Linux"
+
+    Prerequisite for module install on Linux Machine
+
+    ```bash
+    --8<-- "./docs/snippets/pre-req-linux.sh"
+    ```
+
+    Save Modules [module dependencies](/powershell-module-for-vmware-cloud-foundation-password-management/#module-dependencies) from the PowerShell Gallery on a non air-gapped machine by running the following commands:
+
+    ```powershell
+    --8<-- "./docs/snippets/save-module-local-linux.ps1"
+    ```
+
+    Copy the PowerShell Modules [module dependencies](/powershell-module-for-vmware-cloud-foundation-password-management/#module-dependencies) from the Local Machine to air-gapped facing machine by running the following commands:
+
+    ```bash
+    --8<-- "./docs/snippets/copy-module-local-linux.sh"
+    ```
+
+    Import the PowerShell Modules [module dependencies](/powershell-module-for-vmware-cloud-foundation-password-management/#module-dependencies) from the air-gapped machine by running the following commands in PowerShell:
+
+    ```powershell
+    --8<-- "./docs/snippets/import-module-local-linux.ps1"
+    ```
+
 To verify the correct versions of the supporting modules are installed, run the following command in the PowerShell console.
 
 ```powershell

docs/snippets/copy-module-local-linux.sh

@@ -0,0 +1 @@
+scp -r /home/modules/* username@remote_host:/home/lab/.local/share/powershell/Modules/

docs/snippets/copy-module-local-windows.ps1

@@ -0,0 +1 @@
+Copy-Item -Path F:\Module\* -Destination '\\<destination_host>\C$\Program Files\WindowsPowerShell\Modules\' -Recurse

docs/snippets/import-module-local-linux.ps1

@@ -0,0 +1,5 @@
+Import-Module -Name VMware.PowerCLI
+Import-Module -Name VMware.vSphere.SsoAdmin
+Import-Module -Name PowerVCF
+Import-Module -Name PowerValidatedSolutions
+Import-Module -Name ImportExcel

docs/snippets/pre-req-linux.sh

@@ -0,0 +1 @@
+mkdir /home/modules

docs/snippets/save-module-local-linux.ps1

@@ -0,0 +1,5 @@
+Save-Module -Name VMware.PowerCLI -Path /home/modules
+Save-Module -Name VMware.vSphere.SsoAdmin -Path /home/modules
+Save-Module -Name PowerVCF -Path /home/modules
+Save-Module -Name PowerValidatedSolutions -Path /home/modules
+Save-Module -Name ImportExcel -Path /home/modules

docs/snippets/save-module-local-windows.ps1

@@ -0,0 +1,5 @@
+Import-Module -Name VMware.PowerCLI -Path F:\Module\
+Import-Module -Name VMware.vSphere.SsoAdmin -Path F:\Module\
+Import-Module -Name PowerVCF -Path F:\Module\
+Import-Module -Name PowerValidatedSolutions -Path F:\Module\
+Import-Module -Name ImportExcel -Path F:\Module\