first version which seems to run

next.config.js

@@ -7,12 +7,16 @@ const isStatic = process.env.EXPORT_MODE === "static";
 const basePath = process.env.NEXT_PUBLIC_BASE_PATH;
 const assetPrefix = process.env.NEXT_PUBLIC_ASSET_PREFIX || basePath;
 
+const isDocker = process.env.DOCKER_BUILD === "true";
+
 const extraConfig = {};
 
 if (isStatic) {
   extraConfig.output = "export";
   extraConfig.trailingSlash = true;
   extraConfig.skipTrailingSlashRedirect = true;
+} else if (isDocker) {
+  extraConfig.output = "standalone";
 }
 
 module.exports = {