feat: update workflows for docker and release processes

- Updated `.github/workflows/docker-publish.yml`:
  - Commented out the branch trigger for `main` in the `push` event to allow only tag-based Docker builds (tags like `v*.*.*`).

- Updated `.github/workflows/release.yml`:
  - Removed default release body template containing placeholder release notes. This simplifies the release creation process and avoids predefined content.
  - No functional changes to release asset upload configurations, minor format adjustment to ensure no missing newline at the file end.

.github/workflows/docker-publish.yml

@@ -2,7 +2,7 @@ name: Docker Image CI
 
 on:
   push:
-    branches: [ "main" ]
+    # branches: [ "main" ]
     tags: [ 'v*.*.*' ]
   pull_request:
     branches: [ "main" ]

.github/workflows/release.yml

@@ -24,10 +24,6 @@ jobs:
         with:
           tag_name: ${{ github.ref_name }}
           release_name: ${{ github.ref_name }}
-          body: |
-            ## Release Notes
-            - 自动发布版本。
-            - 请根据需求更新对应内容。
           draft: false
           prerelease: false
       
@@ -45,4 +41,4 @@ jobs:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
           asset_path: ./gemini-balance.zip # 替换为你的构建文件路径
           asset_name: gemini-balance.zip  # 替换为你的文件名
-          asset_content_type: application/zip
+          asset_content_type: application/zip