build package before publishing

Author: Dpbm

.github/workflows/build_test_publish.yml

@@ -69,6 +69,16 @@ jobs:
         steps:
             - uses: actions/checkout@v4
 
+            - name: Set up Python 3.12
+              uses: actions/setup-python@v5
+              with:
+                  python-version: 3.12.8
+
+            - name: build package
+              run: |
+                  python3 -m pip install --upgrade build
+                  python3 -m build
+
             - name: Publish to PYPI
               uses: pypa/gh-action-pypi-publish@release/v1