1. 新建个专用的目录，然后在里面新建个docker-compose.yml文件：
（gitlab-ce是社区版，当然还有ee，是商业版）
version: '3.6'
services: web: image: 'gitlab/gitlab-ce:latest' restart: always hostname: 'gitlab.example.com' environment: GITLAB_OMNIBUS_CONFIG: | external_url 'https://你的公网IP:30080' # Add any other gitlab.rb configuration here, each on its own line ports: - '30080:30080' - '30443:443' - '30022:22' - '3080:80' volumes: - './config:/config:/etc/gitlab' - './logs:/logs:/var/log/gitlab' - './data:/data:/var/opt/gitlab' shm_size: '256m' 2. 启动docker-compose，并检查语法：
docker compose up -d
3. 进入容器，之后查看密码
cat /etc/gitlab/initial_root_password输出的结果是：
首先这里面告诉了我们初始 username为root，密码是 QKHN+xn7H2s/FvyIQ8ZqAqVBkTufEEs4eJXyrxi3FyM=，但是这个文件会在24小时内自动删除，所以最好还是按照提示去重置一下密码。
# WARNING: This value is valid only in the following conditions
# 1. If provided manually (either via `GITLAB_ROOT_PASSWORD` environment variable or via `gitlab_rails['initial_root_password']` setting in `gitlab.rb`, it was provided before database was seeded for the first time (usually, the first reconfigure run).
# 2. Password hasn't been changed manually, either via UI or via command line.
#
# If the password shown here doesn't work, you must reset the admin password following https://docs.gitlab.com/ee/security/reset_user_password.html#reset-your-root-password.Password: QKHN+xn7H2s/FvyIQ8ZqAqVBkTufEEs4eJXyrxi3FyM=# NOTE: This file will be automatically deleted in the first reconfigure run after 24 hours.如果你不想重置密码，直接访问 https://你的公网IP:30080，然后输入初始用户名和密码就可以了。
4. 重置密码
还是访问 https://你的公网IP:30080，然后在左边的侧边栏点击向下的箭头，然后选择【Admin Area】-【Overview】-【Users】，然后修改。密码要求数字+字母，至少8位。
（所以我为什么不直接在DockerCompose文件里面直接设置密码(〃＞皿＜)）
