feat: add multiple docker tags (latest, latest_full, latest_slim) to … (#10040)

…release workflow (#10039)  
This change updates the GitHub Actions workflow to push additional
stable tags alongside version tags, enabling automated update tools like
Watchtower to detect and pull the latest images correctly.
Refs:
[https://github.com/infiniflow/ragflow/issues/10039](https://github.com/infiniflow/ragflow/issues/10039)

### What problem does this PR solve?  
Automated container update tools such as Watchtower rely on stable tags
like `latest` to identify the newest images. Previously, only
version-specific tags were pushed, which prevented these tools from
detecting new releases automatically. This PR adds multiple stable tags
(`latest-full`, `latest-slim`) alongside version tags to the Docker
image publishing workflow, ensuring smooth and reliable automated
updates without manual tag management.

### Type of change  
- [ ] Bug Fix (non-breaking change which fixes an issue)  
- [x] New Feature (non-breaking change which adds functionality)  
- [ ] Documentation Update  
- [ ] Refactoring  
- [ ] Performance Improvement  
- [ ] Other (please describe):

---------

Co-authored-by: Zhichang Yu <yuzhichang@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/release.yml

@@ -88,7 +88,9 @@ jobs:
         with:
           context: .
           push: true
-          tags: infiniflow/ragflow:${{ env.RELEASE_TAG }}
+          tags: |
+            infiniflow/ragflow:${{ env.RELEASE_TAG }}
+            infiniflow/ragflow:latest-full
           file: Dockerfile
           platforms: linux/amd64
 
@@ -98,7 +100,9 @@ jobs:
         with:
           context: .
           push: true
-          tags: infiniflow/ragflow:${{ env.RELEASE_TAG }}-slim
+          tags: |
+            infiniflow/ragflow:${{ env.RELEASE_TAG }}-slim
+            infiniflow/ragflow:latest-slim
           file: Dockerfile
           build-args: LIGHTEN=1
           platforms: linux/amd64