Add production Docker deployment

Amp-Thread-ID: https://ampcode.com/threads/T-01a02485-5574-707c-bff4-5668d83bee8a
Co-authored-by: Heaust Azure <heaust.azure@gmail.com>

server/packages_test.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestLoadPackages(t *testing.T) {
+	directory := t.TempDir()
+	for _, name := range []string{
+		"core.js",
+		"handles.js",
+		"worker.js",
+		"importer-worker.js",
+		"bvh-worker.js",
+		filepath.Join("pkg", "yawn_core_bg.wasm"),
+	} {
+		path := filepath.Join(directory, name)
+		if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(path, []byte(name), 0o644); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	packages, err := loadPackages(directory)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(packages) != 6 {
+		t.Fatalf("package count = %d", len(packages))
+	}
+	if content := string(packages["pkg/yawn_core_bg.wasm"].content); content != filepath.Join("pkg", "yawn_core_bg.wasm") {
+		t.Fatalf("WASM content = %q", content)
+	}
+}