chore(CI): do not update latest tag for docker hub when pre-release

.github/workflows/build_packages.yaml

@@ -386,7 +386,22 @@ jobs:
         username: ${{ secrets.DOCKER_HUB_USER }}
         password: ${{ secrets.DOCKER_HUB_TOKEN }}
     - uses: docker/build-push-action@v2
-      if: github.event_name == 'release'
+      if: github.event_name == 'release' && github.event.release.prerelease
+      with:
+        push: true
+        pull: true
+        no-cache: true
+        platforms: linux/amd64,linux/arm64
+        tags: emqx/${{ matrix.profile }}:${{ steps.version.outputs.version }}
+        build-args: |
+          PKG_VSN=${{ steps.version.outputs.version }}
+          BUILD_FROM=ghcr.io/emqx/emqx-builder-helper/5.0:${{ matrix.otp }}-alpine3.14
+          RUN_FROM=alpine:3.14
+          EMQX_NAME=${{ matrix.profile }}
+        file: source/deploy/docker/Dockerfile
+        context: source
+    - uses: docker/build-push-action@v2
+      if: github.event_name == 'release' && !github.event.release.prerelease
       with:
         push: true
         pull: true