fix: 修复容器运行时长显示（使用/proc计算实际容器运行时间）

routes/admin_api/core.py

@@ -570,10 +570,34 @@ def get_docker_stats():
                 logger.debug(f"读取CPU信息失败: {e}")
 
             try:
-                result = subprocess.check_output(["uptime", "-p"]).decode("utf-8").strip()
-                docker_status["uptime"] = result.replace("up ", "")
+                # 读取系统运行时间
+                with open('/proc/uptime', 'r') as f:
+                    system_uptime = float(f.read().split()[0])
+                
+                # 读取 PID 1 的启动时间 (jiffies)
+                with open('/proc/1/stat', 'r') as f:
+                    stat = f.read().split()
+                    starttime_jiffies = int(stat[21])
+                
+                # 获取 CLK_TCK (通常是 100)
+                clk_tck = os.sysconf(os.sysconf_names['SC_CLK_TCK'])
+                
+                # 计算容器运行时长（秒）
+                container_uptime_seconds = system_uptime - (starttime_jiffies / clk_tck)
+                
+                # 格式化为可读字符串
+                days = int(container_uptime_seconds // 86400)
+                hours = int((container_uptime_seconds % 86400) // 3600)
+                minutes = int((container_uptime_seconds % 3600) // 60)
+                
+                if days > 0:
+                    docker_status["uptime"] = f"{days}天{hours}小时{minutes}分钟"
+                elif hours > 0:
+                    docker_status["uptime"] = f"{hours}小时{minutes}分钟"
+                else:
+                    docker_status["uptime"] = f"{minutes}分钟"
             except Exception as e:
-                logger.debug(f"获取运行时间失败: {e}")
+                logger.debug(f"获取容器运行时间失败: {e}")
 
             docker_status["status"] = "Running"