diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..ca5d78e
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,2 @@
+PORT=3000
+UI_URL=http://localhost:3001
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 22f55ad..cffc885 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,4 +32,7 @@ lerna-debug.log*
 !.vscode/settings.json
 !.vscode/tasks.json
 !.vscode/launch.json
-!.vscode/extensions.json
\ No newline at end of file
+!.vscode/extensions.json
+
+# ENV
+.env
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..04a2265
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,23 @@
+# Use an official Node runtime as a parent image
+FROM node:16
+
+# Set the working directory in the container
+WORKDIR /usr/src/app
+
+# Copy package.json and package-lock.json (or yarn.lock)
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Bundle app source
+COPY . .
+
+# Build the application if needed
+RUN npm run build
+
+# Your app binds to port 3000 so you'll use the EXPOSE instruction to have it mapped by the docker daemon
+EXPOSE 3000
+
+# Define the command to run your app
+CMD [ "node", "dist/main" ]  # Adjust the path if your entry file is different
diff --git a/package-lock.json b/package-lock.json
index 78b4320..16777b3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,8 +10,10 @@
       "license": "UNLICENSED",
       "dependencies": {
         "@nestjs/common": "^10.0.0",
+        "@nestjs/config": "^3.1.1",
         "@nestjs/core": "^10.0.0",
         "@nestjs/platform-express": "^10.0.0",
+        "dotenv": "^16.3.2",
         "reflect-metadata": "^0.1.13",
         "rxjs": "^7.8.1",
         "shortid": "^2.2.16"
@@ -1683,6 +1685,32 @@
         }
       }
     },
+    "node_modules/@nestjs/config": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/@nestjs/config/-/config-3.1.1.tgz",
+      "integrity": "sha512-qu5QlNiJdqQtOsnB6lx4JCXPQ96jkKUsOGd+JXfXwqJqZcOSAq6heNFg0opW4pq4J/VZoNwoo87TNnx9wthnqQ==",
+      "dependencies": {
+        "dotenv": "16.3.1",
+        "dotenv-expand": "10.0.0",
+        "lodash": "4.17.21",
+        "uuid": "9.0.0"
+      },
+      "peerDependencies": {
+        "@nestjs/common": "^8.0.0 || ^9.0.0 || ^10.0.0",
+        "reflect-metadata": "^0.1.13"
+      }
+    },
+    "node_modules/@nestjs/config/node_modules/dotenv": {
+      "version": "16.3.1",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.3.1.tgz",
+      "integrity": "sha512-IPzF4w4/Rd94bA9imS68tZBaYyBWSCE47V1RGuMrB94iyTOIEwRmVL2x/4An+6mETpLrKJ5hQkB8W4kFAadeIQ==",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/motdotla/dotenv?sponsor=1"
+      }
+    },
     "node_modules/@nestjs/core": {
       "version": "10.3.0",
       "resolved": "https://registry.npmjs.org/@nestjs/core/-/core-10.3.0.tgz",
@@ -3690,6 +3718,25 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/dotenv": {
+      "version": "16.3.2",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.3.2.tgz",
+      "integrity": "sha512-HTlk5nmhkm8F6JcdXvHIzaorzCoziNQT9mGxLPVXW8wJF1TiGSL60ZGB4gHWabHOaMmWmhvk2/lPHfnBiT78AQ==",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/motdotla/dotenv?sponsor=1"
+      }
+    },
+    "node_modules/dotenv-expand": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/dotenv-expand/-/dotenv-expand-10.0.0.tgz",
+      "integrity": "sha512-GopVGCpVS1UKH75VKHGuQFqS1Gusej0z4FyQkPdwjil2gNIv+LNsqBlboOzpJFZKVT95GkCyWJbBSdFEFUWI2A==",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/eastasianwidth": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/eastasianwidth/-/eastasianwidth-0.2.0.tgz",
@@ -6011,8 +6058,7 @@
     "node_modules/lodash": {
       "version": "4.17.21",
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
-      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
-      "dev": true
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "node_modules/lodash.memoize": {
       "version": "4.1.2",
@@ -8267,6 +8313,14 @@
         "node": ">= 0.4.0"
       }
     },
+    "node_modules/uuid": {
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.0.tgz",
+      "integrity": "sha512-MXcSTerfPa4uqyzStbRoTgt5XIe3x5+42+q1sDuy3R5MDk66URdLMOZe5aPX/SQd+kuYAh0FdP/pO28IkQyTeg==",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/v8-compile-cache-lib": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.1.tgz",
diff --git a/package.json b/package.json
index 9b8b700..ee2d8b5 100644
--- a/package.json
+++ b/package.json
@@ -21,8 +21,10 @@
   },
   "dependencies": {
     "@nestjs/common": "^10.0.0",
+    "@nestjs/config": "^3.1.1",
     "@nestjs/core": "^10.0.0",
     "@nestjs/platform-express": "^10.0.0",
+    "dotenv": "^16.3.2",
     "reflect-metadata": "^0.1.13",
     "rxjs": "^7.8.1",
     "shortid": "^2.2.16"
diff --git a/src/app.module.ts b/src/app.module.ts
index 30c182b..723a8a9 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -2,9 +2,14 @@ import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { UrlShortenerModule } from './url-shortener/url-shortener.module';
 import { DnsService } from './dns/dns.service';
+import { ConfigModule } from '@nestjs/config';
 
 @Module({
-  imports: [UrlShortenerModule],
+  imports: [
+    ConfigModule.forRoot({
+    isGlobal: true, // Makes the config globally available
+  }),UrlShortenerModule,
+],
   controllers: [AppController],
   providers: [DnsService],
 })
diff --git a/src/main.ts b/src/main.ts
index da5451c..2c17699 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,9 +1,14 @@
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
+import * as dotenv from 'dotenv';
+
+dotenv.config();
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
+  const port = process.env.SERVER_PORT || 3004;
   app.enableCors();
-  await app.listen(3000);
+  await app.listen(port);
+  console.log(`Application is running on: ${await app.getUrl()}`);
 }
 bootstrap();
diff --git a/src/url-shortener/url-shortener.controller.ts b/src/url-shortener/url-shortener.controller.ts
index 345f486..0788d6b 100644
--- a/src/url-shortener/url-shortener.controller.ts
+++ b/src/url-shortener/url-shortener.controller.ts
@@ -2,10 +2,12 @@ import { Controller, Post, Body, Get, Param, HttpException, HttpStatus, Res } fr
 import { UrlShortenerService } from './url-shortener.service';
 import { ApiResponse } from './response.interface';
 import { Response } from 'express';
+import { ConfigService } from '@nestjs/config';
+
 
 @Controller('url-shortener')
 export class UrlShortenerController {
-  constructor(private readonly urlShortenerService: UrlShortenerService) {}
+  constructor(private readonly urlShortenerService: UrlShortenerService, private configService: ConfigService) {}
 
   @Post('shorten')
   async shortenUrl(@Body('url') url: string): Promise<ApiResponse> {
@@ -25,7 +27,7 @@ export class UrlShortenerController {
     try {
       const originalUrl = this.urlShortenerService.getOriginalUrl(shortUrl);
       if (!originalUrl) {
-        return res.redirect('http://localhost:3001/404');
+        return res.redirect(`${this.configService.get<string>('UI_URL')}/404`);
       }
       return res.redirect(originalUrl);
     } catch (error) {