Linux系统中GitLab插件安装方法如下：
sudo apt update，安装依赖sudo apt install -y curl openssh-server ca-certificates tzdata perl，添加GitLab官方GPG密钥curl https://packages.gitlab.com/gpg.key | sudo apt-key add -，添加仓库sudo sh -c 'echo "deb https://packages.gitlab.com/gitlab/gitlab-ce/debian $(lsb_release -cs) main" > /etc/apt/sources.list.d/gitlab.list'，再更新包列表sudo apt update，最后安装插件，如sudo apt install gitlab-runner。sudo yum install -y curl policycoreutils-python openssh-server，配置GitLab Runner（若需），安装插件如sudo gitlab-rails plugin install gitlab-rails，安装后重启GitLab服务sudo systemctl restart gitlab-runsvdir。git clone克隆到本地，进入目录安装依赖，运行安装脚本（若有），安装后重启GitLab服务。docker-compose.yml文件，添加插件服务定义，启动Docker Compose服务，验证插件安装。