add 404 page

_deploy/sample.docker-compose.yml

@@ -31,7 +31,7 @@ services:
     ports:
       - 8083:8080
 
-  # THE APP    
+  # THE APP
   nextjs-app:
     image: sachinvashist/nextjs-docker
     ports:
@@ -61,5 +61,3 @@ services:
     stdin_open: true
     # depends_on:
     #   - mariadb
-
-   

pages/404.js

@@ -0,0 +1,3 @@
+export default function Custom404() {
+    return <h1>404 - Страницата не е намерена</h1>
+}