diff --git a/apps/demo/404.html b/apps/demo/404.html
new file mode 100644
index 0000000..570240d
--- /dev/null
+++ b/apps/demo/404.html
@@ -0,0 +1,12 @@
+
+404 Not Found
+
+404 Not Found
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/build/app-demo/Dockerfile b/build/app-demo/Dockerfile
index 10be8c4..4ddd73d 100644
--- a/build/app-demo/Dockerfile
+++ b/build/app-demo/Dockerfile
@@ -14,14 +14,16 @@ RUN rm -rf ./*
# Copy assets over so Nginx can properly serve
COPY apps/demo/index.html .
+COPY apps/demo/404.html .
RUN chown -R nginx:nginx /usr/share/nginx/html
# implement changes required to run NGINX as an unprivileged user
RUN sed -i 's,listen 80;,listen 8080;,' /etc/nginx/conf.d/default.conf \
+ && sed -i 's,#error_page 404,error_page 404,' /etc/nginx/conf.d/default.conf \
&& sed -i '/user nginx;/d' /etc/nginx/nginx.conf \
&& sed -i 's,/var/run/nginx.pid,/tmp/nginx.pid,' /etc/nginx/nginx.conf \
- && sed -i "/^http {/a \ proxy_temp_path /tmp/proxy_temp;\n client_body_temp_path /tmp/client_temp;\n fastcgi_temp_path /tmp/fastcgi_temp;\n uwsgi_temp_path /tmp/uwsgi_temp;\n scgi_temp_path /tmp/scgi_temp;\n" /etc/nginx/nginx.conf \
+ && sed -i "/^http {/a \ proxy_temp_path /tmp/proxy_temp;\n client_body_temp_path /tmp/client_temp;\n fastcgi_temp_path /tmp/fastcgi_temp;\n uwsgi_temp_path /tmp/uwsgi_temp;\n scgi_temp_path /tmp/scgi_temp;\n server_tokens off;\n" /etc/nginx/nginx.conf \
# nginx user must own the cache and etc directory to write cache and tweak the nginx config
&& chown -R $UID:0 /var/cache/nginx \
&& chmod -R g+w /var/cache/nginx \