Updates dockerfile

node_modules/astro/dist/virtual-modules/container.js

@@ -0,0 +1,18 @@
+async function loadRenderers(renderers) {
+  const loadedRenderers = await Promise.all(
+    renderers.map(async (renderer) => {
+      const mod = await import(renderer.serverEntrypoint);
+      if (typeof mod.default !== "undefined") {
+        return {
+          ...renderer,
+          ssr: mod.default
+        };
+      }
+      return void 0;
+    })
+  );
+  return loadedRenderers.filter((r) => Boolean(r));
+}
+export {
+  loadRenderers
+};