改为推送到docker hub

.gitea/workflows/build.yml

@@ -24,7 +24,11 @@ concurrency:
 
 env:
   REGISTRY: docker.io
-  DOCKER_USER: ${{ secrets.DOCKER_USERNAME || 'openim' }}
+  # Docker Hub 命名空间：itom-group
+  DOCKER_USER: itom-group
+  # Docker Hub 凭证来自仓库 Secrets
+  DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+  DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
   GO_VERSION: "1.24"
 
 jobs:
@@ -97,8 +101,9 @@ jobs:
     - name: 登录到 Docker Hub
       uses: docker/login-action@v3.1.0
       with:
-        username: ${{ env.DOCKER_USER }}
-        password: ${{ secrets.DOCKER_PASSWORD }}
+        # 使用账号登录，镜像仍推送到 DOCKER_USER 命名空间
+        username: ${{ env.DOCKER_USERNAME }}
+        password: ${{ env.DOCKER_PASSWORD }}
 
     - name: 构建和推送 Docker 镜像
       run: |