release workflow.

Author: michelp

.github/workflows/release.yml

@@ -8,6 +8,11 @@ jobs:
   deploy:
     runs-on: ubuntu-20.04
 
+    - name: checkout
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 1
+
     steps:
     - name: build
       run: |