build: compare with the previous release when contains release tag

Author: lizhineng

.github/workflows/build.yml

@@ -7,17 +7,39 @@ jobs:
     changes:
       name: Detect Changes
       runs-on: ubuntu-latest
-      permissions:
-        pull-requests: read
       outputs:
         variants: ${{ steps.filter.outputs.changes }}
       steps:
         - name: Checkout code
           uses: actions/checkout@v4
+          with:
+            fetch-depth: ${{ startsWith(github.ref, 'refs/tags/v') && 0 || 1 }}
+
+        - name: Retrieve the previous release version
+          if: startsWith(github.ref, 'refs/tags/v')
+          id: previous_release
+          env:
+            GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          run: |
+            # Attempt to get the tag of the second-to-last release
+            PREVIOUS_TAG=$(gh release list --limit 2 --json tagName | jq -r '. | select(length > 1) | .[1].tagName')
+
+            if [[ -z "$PREVIOUS_TAG" ]]; then
+              echo "No previous release found. Falling back to the first commit."
+              REF=$(git rev-list --max-parents=0 HEAD)
+            else
+              echo "Found previous release: $PREVIOUS_TAG"
+              REF=$PREVIOUS_TAG
+            fi
+
+            echo "The reference point is: $REF"
+            echo "ref=$REF" >> $GITHUB_OUTPUT
+
         - uses: dorny/paths-filter@v3
           id: filter
           with:
             filters: .github/filters.yml
+            base: ${{ startsWith(github.ref, 'refs/tags/v') && steps.previous_release.outputs.ref || '' }}
 
     build:
         needs: changes