update required env variables

.env.example

@@ -8,8 +8,11 @@
 NEXT_PUBLIC_LICENSE_CONSENT=
 LICENSE=
 
-BASE_URL=http://localhost:3000
-NEXT_PUBLIC_APP_URL=http://localhost:3000
+NEXT_PUBLIC_WEBAPP_URL=http://localhost:3000
+
+# It is highly recommended that the NEXTAUTH_SECRET must be overridden and very unique
+# Use `openssl rand -base64 32` to generate a key
+NEXTAUTH_SECRET=secret
 
 POSTGRES_USER=unicorn_user
 POSTGRES_PASSWORD=magical_password
@@ -42,7 +45,4 @@ EMAIL_SERVER_PASSWORD=email_password
 # Encryption key that will be used to encrypt CalDAV credentials, choose a random string, for example with `dd if=/dev/urandom bs=1K count=1 | md5sum`
 CALENDSO_ENCRYPTION_KEY=
 
-# It is highly recommended that the JWT secret must be overridden and very unique
-JWT_SECRET=secret
-
 NODE_ENV=production