fix(modern-js-plugin): apply ssr.distOutputDir in bundlerChain (#3675)

Author: 2heal1

.changeset/soft-islands-protect.md

@@ -0,0 +1,5 @@
+---
+'@module-federation/modern-js': patch
+---
+
+fix(modern-js-plugin): apply ssr.distOutputDir in bundlerChain

packages/modernjs/src/cli/ssrPlugin.ts

@@ -70,7 +70,10 @@ const mfSSRRsbuildPlugin = (
             ? pluginOptions.userConfig.ssr
             : {}
           : {};
-        config.output!.publicPath = `${config.output!.publicPath}${userSSRConfig.distOutputDir || path.relative(csrOutputPath, ssrOutputPath)}/`;
+        if (userSSRConfig.distOutputDir) {
+          return;
+        }
+        config.output!.publicPath = `${config.output!.publicPath}${path.relative(csrOutputPath, ssrOutputPath)}/`;
         return config;
       };
       api.modifyWebpackConfig((config, utils) => {
@@ -148,6 +151,17 @@ export const moduleFederationSSRPlugin = (
             .plugin('UniverseEntryChunkTrackerPlugin')
             .use(UniverseEntryChunkTrackerPlugin);
         }
+        const userSSRConfig = pluginOptions.userConfig.ssr
+          ? typeof pluginOptions.userConfig.ssr === 'object'
+            ? pluginOptions.userConfig.ssr
+            : {}
+          : {};
+        const publicPath = chain.output.get('publicPath');
+        if (userSSRConfig.distOutputDir && publicPath) {
+          chain.output.publicPath(
+            `${publicPath}${userSSRConfig.distOutputDir}/`,
+          );
+        }
       }
 
       if (isDev && isWeb) {