一些更新

玩客云首次启动生成随机 mac 地址 #113
自签 SSL 证书修改为首次启动时生成，增强安全性
优化整合包镜像构建脚本和  Dockerfile
修复 docker 启动脚本错误

build/services/kvmd-generate-mac.service

@@ -0,0 +1,18 @@
+[Unit]
+Description=Generate Random MAC Address for OneCloud (One-time)
+Documentation=https://github.com/your-repo/One-KVM
+Before=systemd-networkd.service
+Before=network-pre.target
+Wants=network-pre.target
+After=local-fs.target
+ConditionPathExists=!/var/lib/kvmd/.mac-generated
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/bin/generate-random-mac.sh
+RemainAfterExit=yes
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target