nginx: Fix 404 page.

Dockerfile

@@ -2,4 +2,4 @@ FROM klakegg/hugo:onbuild AS hugo
 
 FROM nginx:alpine-slim
 COPY --from=hugo /target /usr/share/nginx/html
-COPY nginx.conf /etc/nginx/nginx.conf
+COPY default.conf /etc/nginx/conf.d/default.conf

default.conf

@@ -0,0 +1,15 @@
+server {
+    listen       80;
+    listen  [::]:80;
+    server_name  localhost;
+    location / {
+        root   /usr/share/nginx/html;
+        index  index.html index.htm;
+    }
+    error_page  404              /404.html;
+    error_page   500 502 503 504  /50x.html;
+    location = /50x.html {
+        root   /usr/share/nginx/html;
+    }
+}
+

nginx.conf

@@ -1,16 +0,0 @@
-
-user  nginx;
-worker_processes  auto;
-error_log  /var/log/nginx/error.log notice;
-pid        /var/run/nginx.pid;
-events {
-    worker_connections  1024;
-}
-http {
-    server {
-        root /usr/share/nginx/html;
-        location / {
-            error_page 404 /404.html;
-        }
-    }
-}