updated workflow

.github/workflows/build_posts.yml

@@ -0,0 +1,38 @@
+name: Build Posts
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.x
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install nbconvert
+
+    - name: Run script
+      run: python build_posts.py
+
+    - name: Commit and push changes
+      run: |
+        git config --global user.name 'GitHub Actions'
+        git config --global user.email '[email protected]'
+        git add posts/*
+        git commit -m 'Update posts' || exit 0
+        git push origin master
+
+
+