fix baseURL for previews

.github/workflows/deploy.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Install dependencies
         run: yarn install --frozen-lockfile
       - name: Build website
-        run: yarn build
+        run: BASEURL='/' yarn build
 
       - name: Upload Build Artifact
         uses: actions/upload-pages-artifact@v3

.github/workflows/pr-preview.yml

@@ -30,9 +30,12 @@ jobs:
         run: git submodule init && git submodule update --remote --merge
       - name: Install and Build
         if: github.event.action != 'closed' # You might want to skip the build if the PR has been closed
+        env:
+          pr: ${{ github.event.number }}
         run: |
+        echo "pr=$pr" >> $GITHUB_ENV
           yarn install --frozen-lockfile
-          yarn build
+          BASEURL='/pr-preview/pr-$pr' yarn build
 
       - name: Deploy preview
         uses: rossjrw/pr-preview-action@v1

docusaurus.config.js

@@ -17,7 +17,7 @@ const config = {
   url: 'https://keychain.org',
   // Set the /<baseUrl>/ pathname under which your site is served
   // For GitHub pages deployment, it is often '/<projectName>/'
-  baseUrl: '/',
+  baseUrl: process.env.BASEURL,
 
   // GitHub pages deployment config.
   // If you aren't using GitHub pages, you don't need these.