diff --git a/README.md b/README.md
index 2218a0a..8d80e9c 100644
--- a/README.md
+++ b/README.md
@@ -168,6 +168,16 @@ docker compose -p wapydev-dev -f docker-compose-dev.yml up -d
 
 `SUBSCRIPTION_JWT_SECRET`: The secret key for the subscription signing. When you run the `setup.sh` script, it will generate a random secret for you.
 
+### Building Docker Image
+
+If you want to build the Docker image locally, you can run the following command:
+
+```
+docker build -t wapy.dev -f Dockerfile .
+```
+
+Don't forget to update the `docker-compose.yml` file to use the local image.
+
 ### Database Backup and Restore
 
 You can backup the database by running the `backup.sh` script.
diff --git a/src/components/config.js b/src/components/config.js
index 345b6a5..cca1c37 100644
--- a/src/components/config.js
+++ b/src/components/config.js
@@ -2,7 +2,7 @@ export const siteConfig = {
   name: 'Wapy.dev',
   description: 'Subscription and Expense Tracker',
   keywords: 'subscription, expense, tracker, wapy, meceware',
-  url: process.env.SITE_URL,
+  url: process.env.SITE_URL || 'http://localhost:3000',
   links: {
     github: 'https://github.com/meceware/wapy.dev',
   },
@@ -10,6 +10,6 @@ export const siteConfig = {
     name: 'meceware',
     url: 'https://www.meceware.com/',
   },
-  from: 'Wapy.dev - Subscription Manager',
+  from: 'Wapy.dev Subscription Manager',
   subscriptionReminderFrom: `Wapy.dev Subscription Reminder <${process.env.RESEND_FROM}>`,
 };
diff --git a/src/lib/auth.js b/src/lib/auth.js
index cbcfc39..5f9f94f 100644
--- a/src/lib/auth.js
+++ b/src/lib/auth.js
@@ -7,9 +7,9 @@ import { PrismaAdapter } from '@auth/prisma-adapter';
 import { prisma } from '@/lib/prisma';
 import { siteConfig } from '@/components/config';
 
-const authURL = new URL(`${process.env.SITE_URL}/api/auth`);
-const cookiePrefix = authURL.protocol === 'https:' ? '__Secure-' : '';
-const authDomain = authURL.hostname === 'localhost' ? authURL.hostname : `.${authURL.hostname.split('.').slice(-2).join('.')}`;
+const authURL = new URL(`${siteConfig.url}/api/auth`);
+const cookiePrefix = authURL?.protocol === 'https:' ? '__Secure-' : '';
+const authDomain = authURL?.hostname ? (authURL.hostname === 'localhost' ? authURL.hostname : `.${authURL.hostname.split('.').slice(-2).join('.')}`) : '';
 
 const html = ({ url, token }) => {
   return `
@@ -111,10 +111,10 @@ const authConfig = {
             html: html({ url, token: otp }),
             text: text({ url, token: otp }),
           }),
-        })
+        });
 
         if (!res.ok)
-          throw new Error('Resend error: ' + JSON.stringify(await res.json()))
+          throw new Error('Resend error: ' + JSON.stringify(await res.json()));
       },
     }),
   ],