feat(website): add Dockerfile for Astro site

website/Dockerfile

@@ -0,0 +1,26 @@
+FROM node:22-alpine AS build
+WORKDIR /app
+RUN npm install -g pnpm
+
+# Copy package files
+COPY package.json pnpm-lock.yaml* ./
+
+# Install dependencies
+RUN pnpm install --frozen-lockfile || pnpm install
+
+# Copy source
+COPY . .
+
+# Build
+RUN pnpm build
+
+FROM caddy:alpine
+COPY --from=build /app/dist /srv
+RUN cat > /etc/caddy/Caddyfile <<'EOF'
+:80 {
+	root * /srv
+	file_server
+	try_files {path} /index.html
+}
+EOF
+EXPOSE 80