docs(vscode): high level devcontainer quickstart documentation

Primary Changes
----------------
1. Added a documentation describing how to get
started by opening the repo within the docker container
and by cloning the repo to a docker volume

Fixes #874

Signed-off-by: bado <[email protected]>

BUILD.md

@@ -1,6 +1,7 @@
 - [Hyperledger Cacti Build Instructions](#hyperledger-cacti-build-instructions)
 - [Fast Developer Flow / Code Iterations](#fast-developer-flow--code-iterations)
 - [Getting Started](#getting-started)
+  - [Quickstart with VSC Devcontainer for Hyperledger Cactus](#quickstart-with-vsc-devcontainer-for-hyperledger-cactus)
   - [MacOS](#macos)
   - [Linux](#linux)
   - [Windows](#windows)
@@ -40,6 +41,42 @@ The `npm run watch` script in action:
 
 ## Getting Started
 
+### Quickstart with VSC Devcontainer for Hyperledger Cactus
+
+* Opening the repo Within a Docker Container
+  * Install Prerequisites:
+    * Visual Studio Code (VSC)
+    * Docker Desktop (ensure it's running) https://docs.docker.com/desktop/setup/install/windows-install/
+    * The Remote - Containers VSC extension
+  * Clone the Repository:
+    ```
+    git clone https://github.com/hyperledger-cacti/cacti.git
+    cd cacti
+    ```
+  * Open in VSC and Reopen in Container:
+    * Launch VSC
+    * Open the cacti folder
+    * Press F1 and type and click "Dev Containers: Open Folder in Container."
+  * Wait for the Container Setup:
+    * The devcontainer will install all required dependencies inside the container.
+  * Start Developing:
+    * The container will have all necessary dependencies pre-installed.
+  
+* (This is optional) Cloning the repo to a Docker Volume 
+  * Clone the Repo Using Docker Volume:
+    ```
+    docker volume create cacti_volume
+    docker run -v cacti_volume:/workspace -w /workspace -it node:latest bash
+    git clone https://github.com/hyperledger-cacti/cacti.git
+    ```
+  * Attach VSC to the Running Container:
+    * Open VSC.
+    * Press F1 and type and click "Dev Containers: Open Folder in Container."
+    * Choose the container created earlier.
+  * Start Developing:
+    * The container will have all necessary dependencies pre-installed.
+
+
 ### MacOS 
 
 _Unless explicitly stated otherwise, each bullet will apply to both Intel and ARM Macs. In bullets where there is a difference in the installation process it will be noted._