Add deployment doc

DEPLOYMENT.md

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+# Deployment Instructions
+
+## Prerequisites
+
+Before deploying, make sure you have the following software installed on your machine:
+
+- Node.js (v14 or newer)
+- Docker (v20.10 or newer)
+
+The following environment variables are used for deployment:
+
+- `FONTAWESOME_TOKEN`: This token is used for authentication with the FontAwesome service. You need to obtain a valid token from your FontAwesome account and use it here. Please make sure not to expose this token publicly.
+
+## Local Deployment
+
+### Steps:
+
+1. Install the dependencies:
+
+```bash
+npm install
+```
+
+2. Run Webpack to build the project:
+
+```bash
+npm run prod
+```
+
+3. Run the application:
+
+```bash
+swift run
+```
+
+You should now be able to see the application running at `localhost:8080`.
+
+## Production Deployment
+
+For deploying to production, we recommend using [Render](https://render.com/). Render is a platform that allows you to deploy your application to the cloud with ease. It also provides a free tier that is sufficient for deploying this application.