Fix versions

.github/workflows/versions.yml

@@ -14,17 +14,28 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+        with:
+          ref: gh-pages
+      - uses: actions/setup-python@v4
       - name: Generate versions.json
-        shell: bash
+        shell: python3 {0}
         run: |
-          mkdir versions_folder
-          echo ["main", "0.1.19", "0.1.18", "0.1.12", "0.1.11"] > versions_folder/versions.json
+          import json
+          from pathlib import Path
+
+          cwd = Path.cwd()
+          versions = sorted((item.name for item in cwd.iterdir()
+                             if item.is_dir() and not item.name.startswith('.')),
+                            reverse=True)
+          target_file = Path('versions.json')
+          with target_file.open('w') as f:
+              json.dump(versions, f)
       - name: Commit versions.json
-        uses: JamesIves/github-pages-deploy-action@v4
-        with:
-          branch: gh-pages # The branch the action should deploy to.
-          folder: versions_folder # The folder the action should deploy.
-          target-folder: / # The folder the action should deploy to.
-          commit-message: publish documentation
-          single-commit: true
-          clean: false
+        shell: bash
+        run: |
+          # Commit versions.json and squash it with previous commit
+          git config user.name "Actions"
+          git config user.email "actions@github.com"
+          git add versions.json
+          git commit --amend --no-edit
+          git push origin gh-pages