Added Dockerfile and related Document file

Dockerfile

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+# Use an official Node.js runtime as a parent image
+FROM node:latest
+
+# Set the working directory in the container
+WORKDIR /app
+
+# Copy package.json (and package-lock.json if available) into the container
+COPY package*.json ./
+
+# Install any dependencies
+RUN npm install
+
+# Copy the rest of the application code
+COPY . .
+
+# Make port 8080 available to the world outside this container
+EXPOSE 8080
+
+# Define environment variable (replace with actual key or use Docker's -e flag)
+ENV GOOGLE_API_KEY="Your_Key"
+
+# Run the application
+CMD ["npm", "start"]

docker-doc.md

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+# Using "Thala For Reason" with Docker
+
+## Introduction
+
+"Thala For Reason" is a Node.js-based web application. This guide provides instructions on how to run it using Docker, which simplifies setup and ensures consistency across different environments.
+
+## Prerequisites
+
+- Docker installed on your machine (Linux, Windows, or macOS).
+- A Google API key.
+
+## Installing Docker
+
+### Linux
+
+1. Update your package index:
+   ```
+   sudo apt-get update
+   ```
+
+2. Install Docker:
+   ```
+   sudo apt-get install docker-ce docker-ce-cli containerd.io
+   ```
+
+3. Verify the Docker installation:
+   ```
+   sudo docker run hello-world
+   ```
+
+### Windows
+
+1. Download Docker Desktop from [Docker Hub](https://hub.docker.com/).
+2. Run the installer and follow the instructions.
+3. Open Docker Desktop to complete the installation.
+
+### macOS
+
+1. Download Docker Desktop from [Docker Hub](https://hub.docker.com/).
+2. Double-click the DMG file and drag the Docker icon to the Applications folder.
+3. Open Docker from the Applications folder.
+
+## Creating a Google API Key
+
+ Go to the [Google API key](https://makersuite.google.com/) here and generate your keys.
+
+## Running the Application with Docker
+
+1. Clone the repository:
+   ```
+   git clone https://github.com/your-username/thala-for-reason.git
+   ```
+
+2. Navigate to the project directory:
+   ```
+   cd thala-for-reason
+   ```
+
+3. Build the Docker image:
+   ```
+   docker build -t thala-for-reason .
+   ```
+
+4. Run the Docker container, replacing `your_google_api_key` with your actual Google API key:
+   ```
+   docker run -itd -p 80:8080 -e GOOGLE_API_KEY=your_google_api_key thala-for-reason
+   ```
+
+5. Access the application at `http://localhost:80`.
+
+## Notes
+
+- It's important to keep your Google API key secure. Do not hardcode it in your Dockerfile or source code.
+- For detailed Docker installation instructions, refer to the official Docker documentation.