安装gitlab

docker pull gitlab/gitlab-ce:latest

下载并安装 Docker Compose V2：

sudo curl -L "https://github.com/docker/compose/releases/download/v2.17.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose

验证安装：

docker-compose --version

新建gitlab文件夹

mkdir gitlab

docker-compose.yml:

version: '3.6'
services:
  gitlab:
    image: gitlab/gitlab-ce:latest
    container_name: gitlab
    restart: always
    hostname: gitlab
    environment:
      GITLAB_OMNIBUS_CONFIG: |
        external_url 'http://IP地址:端口号'
        gitlab_rails['gitlab_shell_ssh_port'] = 2222
    ports:
      - "端口号:端口号" #这边两个端口号要一致！！！很重要
      - "4443:443"
      - "2222:22"
    volumes:
      - ./config:/etc/gitlab
      - ./logs:/var/log/gitlab
      - ./data:/var/opt/gitlab
    networks:
      - gitlab-net
networks:
  gitlab-net:
    driver: bridge

在gitlab目录下启动gitlab

docker-compose up -d 

修改gitlab内部配置

进入gitlab容器

vim /etc/gitlab/gitlab.rb

external_url "http://IP地址:端口号/"
nginx['listen_port'] = 端口号

启动

sudo gitlab-ctl reconfigure

配置域名

配置SSL证书

xxxxx.com域名

DNS解析

SSL证书解析

nginx

 server {
    	listen 443 ssl;
    	server_name xxxxx.com;
    	ssl_certificate xxxxx.com_bundle.crt;
		ssl_certificate_key xxxxx.com.key;

		location / {
        proxy_pass http://localhost:端口号;

        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
	}
}

最后等待gitlab容器完全启动，访问https://xxxxx.com就行了!
安装了四天，终于弄完了，特地写个笔记记录一下，防止下次再出问题。