Add dev container

Add dev container

Closes StackGuardian#175

Update Readme.MD

.devcontainer/devcontainer.json

@@ -0,0 +1,6 @@
+{
+  "name": "Tirith Dev Container",
+  "image": "mcr.microsoft.com/devcontainers/python:3.11",
+  "postCreateCommand": "pip install -e ."
+}
+

README.md

@@ -82,6 +82,34 @@ pip install git+https://github.com/StackGuardian/tirith.git
 ```
 
 ### For developers
+
+#### Running the Dev Container
+
+- Clone the repository to your local machine:
+
+```bash
+   git clone <repository-url>
+   cd <repository-folder>
+```
+
+- Start the Docker Engine using docker desktop or CLI.
+
+- Open the project folder in Visual Studio Code
+
+- Once inside VS Code, open the Command Palette `(Ctrl+Shift+P or Cmd+Shift+P on macOS)` and search for **Dev Containers: Rebuild and Reopen in Container**. Select this option.
+
+- VS Code will build the dev container based on the devcontainer.json file or Docker configuration provided in the project. This may take a few minutes.
+
+- Once the container is up, you will have a fully configured development environment running inside Docker.
+
+Reference Links: 
+
+https://code.visualstudio.com/docs/devcontainers/create-dev-container#_create-a-devcontainerjson-file
+
+https://code.visualstudio.com/docs/devcontainers/containers#_managing-containers
+
+
+#### Manual Installation
 Here we are going to install Tirith in a Python virtual environment.
 
 1. Clone the Tirith repository to your system