Fix serverless options (#6884)

packages/next/build/entries.ts

@@ -42,7 +42,8 @@ export function createEntrypoints(pages: PagesMapping, target: 'server'|'serverl
     absoluteErrorPath: pages['/_error'],
     distDir: DOT_NEXT_ALIAS,
     assetPrefix: config.assetPrefix,
-    generateEtags: config.generateEtags
+    generateEtags: config.generateEtags,
+    ampBindInitData: config.experimental.ampBindInitData
   }
 
   Object.keys(pages).forEach((page) => {

packages/next/build/webpack/loaders/next-serverless-loader.ts

@@ -11,6 +11,7 @@ export type ServerlessLoaderQuery = {
   absoluteDocumentPath: string,
   absoluteErrorPath: string,
   assetPrefix: string,
+  ampBindInitData: boolean,
   generateEtags: string
 }
 
@@ -20,6 +21,7 @@ const nextServerlessLoader: loader.Loader = function () {
     absolutePagePath,
     page,
     assetPrefix,
+    ampBindInitData,
     absoluteAppPath,
     absoluteDocumentPath,
     absoluteErrorPath,
@@ -44,7 +46,8 @@ const nextServerlessLoader: loader.Loader = function () {
         buildManifest,
         reactLoadableManifest,
         buildId: "__NEXT_REPLACE__BUILD_ID__",
-        assetPrefix: "${assetPrefix}"
+        assetPrefix: "${assetPrefix}",
+        ampBindInitData: ${Boolean(ampBindInitData)}
       }
       const parsedUrl = parse(req.url, true)
       try {