build: use ghcr.io/hanzoai/spa instead of custom Go server

Dockerfile

@@ -7,19 +7,5 @@ RUN pnpm install --frozen-lockfile
 COPY apps/docs apps/docs
 RUN pnpm --filter lux-docs build
 
-FROM --platform=$BUILDPLATFORM golang:1.26-alpine AS server
-WORKDIR /src
-COPY go.mod go.sum ./
-RUN go mod download
-COPY serve.go .
-ARG TARGETOS=linux
-ARG TARGETARCH=amd64
-RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -ldflags="-w -s" -o /serve .
-
-FROM alpine:3.23
-RUN apk add --no-cache ca-certificates
-COPY --from=server /serve /serve
-COPY --from=build /app/apps/docs/out /app
-EXPOSE 3000
-HEALTHCHECK --interval=10s --timeout=3s CMD wget -q --spider http://localhost:3000/health || exit 1
-CMD ["/serve"]
+FROM ghcr.io/hanzoai/spa
+COPY --from=build /app/apps/docs/out /public

go.mod

@@ -1,5 +0,0 @@
-module github.com/luxfi/docs
-
-go 1.26.1
-
-require github.com/hanzoai/static v0.1.0

go.sum

@@ -1,2 +0,0 @@
-github.com/hanzoai/static v0.1.0 h1:X12eRv7z0HKomdFNRj8jHJKuQb4nSel+Hm/oboIb64I=
-github.com/hanzoai/static v0.1.0/go.mod h1:nI9SvT9wqrO7gheNYnKT5hQAfTTpVLRP6UxtVrqeU+0=

serve.go

@@ -1,111 +0,0 @@
-// Static file server for Lux docs using hanzoai/static.
-// Handles Next.js static export clean URLs: tries path, path.html, path/index.html, then 404.
-package main
-
-import (
-	"context"
-	"fmt"
-	"log"
-	"net/http"
-	"os"
-	"os/signal"
-	"path/filepath"
-	"syscall"
-
-	static "github.com/hanzoai/static"
-)
-
-func main() {
-	port := os.Getenv("PORT")
-	if port == "" {
-		port = "3000"
-	}
-
-	root := os.Getenv("ROOT")
-	if root == "" {
-		root = "/app"
-	}
-
-	cfg := static.CreateConfig()
-	cfg.Root = root
-	cfg.ErrorPage404 = "404.html"
-	cfg.CacheControl = map[string]string{
-		".html": "no-cache",
-		".json": "no-cache",
-		".js":   "public, max-age=31536000, immutable",
-		".css":  "public, max-age=31536000, immutable",
-		".png":  "public, max-age=86400",
-		".jpg":  "public, max-age=86400",
-		".svg":  "public, max-age=86400",
-		".ico":  "public, max-age=86400",
-		".woff": "public, max-age=31536000, immutable",
-		".woff2": "public, max-age=31536000, immutable",
-		"*":     "public, max-age=3600",
-	}
-
-	handler, err := static.New(context.Background(), http.NotFoundHandler(), cfg, "docs")
-	if err != nil {
-		log.Fatalf("failed to create static handler: %v", err)
-	}
-
-	mux := http.NewServeMux()
-
-	mux.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		fmt.Fprint(w, "ok")
-	})
-
-	// Wrap static handler to try .html extension for clean URLs.
-	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		urlPath := r.URL.Path
-
-		// Root: serve index.html directly (avoid redirect).
-		if urlPath == "/" {
-			r.URL.Path = "/index.html"
-			handler.ServeHTTP(w, r)
-			return
-		}
-
-		// Has file extension: serve directly.
-		if filepath.Ext(urlPath) != "" {
-			handler.ServeHTTP(w, r)
-			return
-		}
-
-		// Try path.html (Next.js static export generates these).
-		htmlPath := filepath.Join(root, urlPath+".html")
-		if _, err := os.Stat(htmlPath); err == nil {
-			r.URL.Path = urlPath + ".html"
-			handler.ServeHTTP(w, r)
-			return
-		}
-
-		// Try path/index.html.
-		indexPath := filepath.Join(root, urlPath, "index.html")
-		if _, err := os.Stat(indexPath); err == nil {
-			r.URL.Path = urlPath + "/index.html"
-			handler.ServeHTTP(w, r)
-			return
-		}
-
-		// Fall through to static handler (will serve 404.html).
-		handler.ServeHTTP(w, r)
-	})
-
-	addr := ":" + port
-	srv := &http.Server{Addr: addr, Handler: mux}
-
-	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
-	defer stop()
-
-	go func() {
-		<-ctx.Done()
-		log.Println("shutting down...")
-		srv.Shutdown(context.Background())
-	}()
-
-	log.Printf("serving %s on %s", root, addr)
-	if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
-		log.Fatalf("server error: %v", err)
-	}
-}