update

web/Caddyfile

@@ -0,0 +1,8 @@
+:80 {
+  root * /srv/web_build
+  try_files {path} /200.html
+  file_server
+
+  @health path /health
+  respond @health "ok" 200
+}

web/Dockerfile

@@ -0,0 +1,26 @@
+# Builder: build the SvelteKit static site (adapter-static -> /app/build)
+FROM node:20-alpine AS builder
+WORKDIR /app
+
+# cache package install
+COPY package.json package-lock.json* ./
+RUN npm ci --production=false
+
+# copy source and build
+COPY . .
+RUN npm run build
+
+# Final: lightweight Caddy image to serve the built static files
+FROM caddy:2-alpine AS runtime
+# copy built static output
+COPY --from=builder /app/build /srv/web_build
+# copy Caddyfile from build context (provide Caddyfile at ./web/Caddyfile)
+COPY Caddyfile /etc/caddy/Caddyfile
+# # ensure permissions (caddy runs as non-root)
+# RUN chown -R caddy:caddy /srv/web_build /etc/caddy/Caddyfile
+CMD ["caddy", "run", "--config", "/etc/caddy/Caddyfile"]
+
+# expose standard HTTP/HTTPS (optional in compose)
+EXPOSE 80
+
+# container runs Caddy by default (CMD provided by base image)

web/svelte.config.js

@@ -1,6 +1,12 @@
 import adapter from '@sveltejs/adapter-static';
-
 /** @type {import('@sveltejs/kit').Config} */
-const config = { kit: { adapter: adapter() } };
-
+const config = {
+  kit: {
+    adapter: adapter({
+      pages: 'build',
+      assets: 'build',
+      fallback: '200.html' // SPA fallback for all unknown paths
+    })
+  }
+};
 export default config;