Update CI/CD workflow

Author: lcnittl

.github/workflows/publish.yml

@@ -1,7 +1,7 @@
 # This workflow will upload a Python Package to PyPI when a release is published
 # For more information see:
+#   - https://packaging.python.org/guides/publishing-package-distribution-releases-using-github-actions-ci-cd-workflows/
 #   - https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries
-#   - https://github.com/pypa/gh-action-pypi-publish
 
 name: Upload Python Package
 
@@ -10,24 +10,42 @@ on:
     types: [published]
 
 jobs:
-  deploy:
-    name: Build and publish to PyPI
+  build:
+    name: Build package
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
           python-version: "3.x"
-      - name: Install dependencies
+      - name: Install pypa/build
         run: |
           python -m pip install --upgrade pip
-          pip install --upgrade setuptools wheel
-      - name: Build
+          pip install --upgrade build
+      - name: Build package
         run: |
-          python setup.py sdist bdist_wheel
-      - name: Publish to PyPI
+          python -m build
+      - name: Upload dist files
+        uses: actions/upload-artifact@v2
+        with:
+          name: dist-files
+          path: dist/
+          if-no-files-found: error
+  publish:
+    name: Publish to PyPI
+    needs: [build]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download dist files
+        uses: actions/download-artifact@v2
+        with:
+          name: dist-files
+          path: dist/
+      - name: Publish package to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: __token__