From c0bd145a29a0d51e05d419841829b7609827668a Mon Sep 17 00:00:00 2001
From: Joshua Chen <sidachen2003@gmail.com>
Date: Sat, 7 May 2022 18:57:35 +0800
Subject: [PATCH] fix(theme-classic): resolve customCss from site dir (#7363)

---
 packages/docusaurus-theme-classic/src/index.ts | 11 ++++++-----
 website/docusaurus.config.js                   |  3 ++-
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/packages/docusaurus-theme-classic/src/index.ts b/packages/docusaurus-theme-classic/src/index.ts
index 6a3d46c827..9fd370a2e5 100644
--- a/packages/docusaurus-theme-classic/src/index.ts
+++ b/packages/docusaurus-theme-classic/src/index.ts
@@ -5,6 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+import path from 'path';
 import type {LoadContext, Plugin} from '@docusaurus/types';
 import type {ThemeConfig} from '@docusaurus/theme-common';
 import {getTranslationFiles, translateThemeConfig} from './translations';
@@ -142,11 +143,11 @@ export default function themeClassic(
       ];
 
       if (customCss) {
-        if (Array.isArray(customCss)) {
-          modules.push(...customCss);
-        } else {
-          modules.push(customCss);
-        }
+        modules.push(
+          ...(Array.isArray(customCss) ? customCss : [customCss]).map((p) =>
+            path.resolve(context.siteDir, p),
+          ),
+        );
       }
 
       return modules;
diff --git a/website/docusaurus.config.js b/website/docusaurus.config.js
index e35a43104f..4c373b359c 100644
--- a/website/docusaurus.config.js
+++ b/website/docusaurus.config.js
@@ -337,7 +337,8 @@ const config = {
         theme: {
           customCss: [
             require.resolve('./src/css/custom.css'),
-            require.resolve('./_dogfooding/dogfooding.css'),
+            // relative paths are relative to site dir
+            './_dogfooding/dogfooding.css',
           ],
         },
         gtag: !isDeployPreview