ci: add checksum upload release to new job

Signed-off-by: Han Gao <[email protected]>

.github/workflows/build.yml

@@ -182,12 +182,47 @@ jobs:
                   mkimg-th1520/SHA256SUMS
                   mkimg-th1520/SHA512SUMS
 
-      - name: 'Create release by tag'
-        uses: softprops/action-gh-release@v1
+      - name: 'Upload Release'
+        uses: softprops/action-gh-release@v2
         if: startsWith(github.ref, 'refs/tags/')
         with:
           files: |
                   mkimg-th1520/*.zst
-                  mkimg-th1520/SHA256SUMS
-                  mkimg-th1520/SHA512SUMS
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+  upload_checksum:
+    needs: mkrootfs
+    if: startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Free Disk Space (Ubuntu)
+        uses: jlumbroso/free-disk-space@main
+        with:
+          # this might remove tools that are actually needed,
+          # if set to "true" but frees about 6 GB
+          tool-cache: true
+          # all of these default to true, but feel free to set to
+          # "false" if necessary for your workflow
+          android: true
+          dotnet: true
+          haskell: true
+          large-packages: true
+          docker-images: true
+          swap-storage: true
+
+      - name: Download Built Artifacts
+        uses: actions/download-artifact@v2
+
+      - name: Make Checksum file
+        run: |
+              find . -name "*.zst" | xargs -I{} mv -v {} .
+              sha256sum *.zst > SHA256SUMS
+              sha512sum *.zst > SHA512SUMS
+
+      - name: 'Upload checksum'
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+                  SHA256SUMS
+                  SHA512SUMS
           token: ${{ secrets.GITHUB_TOKEN }}