Commit something which vaguely works

Dockerfile

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+FROM alpine:3.19
+
+RUN apk add --no-cache nginx gettext nginx-mod-http-brotli nginx-mod-http-dav-ext nginx-mod-http-js
+
+RUN mkdir -p /run/nginx
+RUN htpasswd -b -c /etc/nginx/.htpasswd user password
+
+COPY ./nginx.conf /etc/nginx/http.d/default.conf
+COPY ./slides.js /etc/nginx/slides.js
+COPY ./docker-entrypoint.sh /docker-entrypoint.sh
+
+ENV PUID 1000
+
+EXPOSE 80
+
+STOPSIGNAL SIGKILL
+
+CMD ["/docker-entrypoint.sh"]

docker-compose.yml

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+version: "2.3"
+
+services:
+  slides:
+    build:
+      context: .
+    volumes:
+      - ".:/srv"
+    ports:
+      - "80:80"

docker-entrypoint.sh

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+#!/usr/bin/env sh
+
+set -e
+
+# Update nginx user id
+deluser nginx
+adduser -u $PUID -D nginx
+
+exec nginx -g "daemon off;"

nginx.conf

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+server {
+  listen 80;
+  root /srv;
+
+  access_log /dev/stdout;
+  error_log /dev/stderr;
+
+  keepalive_timeout 65;
+  sendfile_max_chunk 1m;
+
+  gzip_static off;
+  gzip on;
+  gzip_types *;
+
+  # brotli
+  brotli on;
+  brotli_static on;
+
+  # IP detection
+  set_real_ip_from  0.0.0.0/0;
+  real_ip_header X-Forwarded-For;
+
+  index index.html;
+  try_files $uri $uri/ =404;
+
+  error_page 403 =404 /404.html;
+
+  # Kick malicious clients sooner
+  client_header_timeout 10s;
+  client_body_timeout 10s;
+  client_max_body_size 128k;
+  reset_timedout_connection on;
+
+  # Expose WebDAV on a sub-path
+  location /.dav/ {
+    alias /srv/;
+
+    auth_basic_user_file /etc/nginx/.htpasswd;
+    auth_basic "Restricted";
+
+    dav_methods PUT DELETE MKCOL COPY MOVE;
+    dav_ext_methods PROPFIND OPTIONS;
+    min_delete_depth 1;
+
+    client_body_temp_path /tmp;
+    create_full_put_path  on;
+  }
+
+  # Healthcheck endpoint
+  location /.ping {
+    access_log off;
+    return 200;
+  }
+
+  js_import slides.js;
+  location = /sitemap.xml {
+    js_content slides.sitemap;
+  }
+}

renovate.json

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+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:base"
+  ]
+}

slides.js

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+const fs = require("fs");
+
+function sitemap(r) {
+    const directories = fs.readdirSync("/srv")
+        .map(f => [f, fs.statSync(`/srv/${f}`)])
+        .filter(d => d[1].isDirectory())
+        .map(d => {
+            const directoryName= d[0];
+            const stats = d[1];
+            const modifiedTime = new Date(stats.mtime);
+            return `<url><loc>https://slides.theorangeone.net/${directoryName}/</loc><lastmod>${modifiedTime.toISOString().split("T")[0]}</lastmod></url>`;
+        });
+
+    const sitemapData = `<?xml version="1.0" encoding="UTF-8"?>
+        <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
+        ${directories.join('')}
+        </urlset>
+    `.replace("\n", "");
+
+    r.headersOut["content-type"] = "application/xml";
+
+    r.return(200, sitemapData);
+}
+
+export default {sitemap};