Upload pdf as release on new tag

.github/workflows/compile.yml

@@ -7,6 +7,8 @@ on:
   # Triggers the workflow on push or pull request events but only for the master branch
   push:
     branches: [ master ]
+    tags:
+      - 'v*.*.*'
   pull_request:
     branches: [ master ]
 
@@ -31,8 +33,10 @@ jobs:
         with:
           root_file: main.tex          
           
-      # Uploads resulting file to workflows
-      - uses: actions/upload-artifact@v2
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/')
         with:
-          name: PDF
-          path: main.pdf
+          files: main.pdf
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}