fix: use publish job to publish

Author: guillaq

.github/workflows/publish.yml

@@ -23,13 +23,22 @@ jobs:
           poetry install --all-extras
 
       - name: Check package version matches tag
+        if: github.event_name == 'push'
         run: |
           TAG_VERSION=${GITHUB_REF#refs/tags/v}
           PACKAGE_VERSION=$(poetry version -s)
           if [ "$TAG_VERSION" != "$PACKAGE_VERSION" ]; then
             echo "Error: Tag version ($TAG_VERSION) does not match package version ($PACKAGE_VERSION)"
             exit 1
           fi
+      - name: Check that version is alpha version
+        if: github.event_name != 'push'
+        run: |
+          PACKAGE_VERSION=$(poetry version -s)
+          if [[ ! "$PACKAGE_VERSION" =~ .*a[0-9]+$ ]]; then
+            echo "Error: Package version ($PACKAGE_VERSION) is not an alpha version (should end with 'aN' where N is a number)"
+            exit 1
+          fi
 
       - name: Build Python package
         run: poetry build