Create nightly releases

Author: Goooler

.github/workflows/build.yml

@@ -47,9 +47,9 @@ jobs:
           ./gradlew app:assembleAlphaRelease
           ./gradlew app:assembleMetaRelease
       - name: Delete release if exist then create release
-        if: github.repository == 'MetaCubeX/ClashMetaForAndroid'
+        if: github.repository == 'Goooler/ClashMetaForAndroid' && github.event_name == 'push'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          gh release view Prerelease-alpha && gh release delete Prerelease-alpha -y --cleanup-tag
-          gh release create Prerelease-alpha "./app/build/outputs/apk/alpha/release/"*.apk --prerelease --generate-notes
+          gh release view nightly && gh release delete nightly -y --cleanup-tag
+          gh release create nightly "./app/build/outputs/apk/alpha/release/"*.apk --prerelease --generate-notes