added upload artifact

Author: CD-Z

.github/workflows/build.yml

@@ -63,3 +63,19 @@ jobs:
           re-sign: true
           github-token: ${{ secrets.GITHUB_TOKEN }}
           variant: preRelease
+
+      - name: Set Environment Variables
+        run: |
+          set -x
+          echo "COMMIT_COUNT=$(git rev-list --count HEAD)" >> $GITHUB_ENV
+          echo "COMMIT_ID=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+
+      - name: Upload Release Artifact
+        env:
+          COMMIT_COUNT: ${{ env.COMMIT_COUNT }}
+          COMMIT_ID: ${{ env.COMMIT_ID }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: LNReader-r${{ env.COMMIT_COUNT }}-${{ env.COMMIT_ID }}
+          path: android/app/build/outputs/apk/**/app-*.apk
+          retention-days: 30