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GitLab是利用Ruby on Rails一个开源的版本管理系统，实现一个自托管的Git项目仓库，支持在内网服务器搭建配置。可通过Web界面进行访问公开的或者私人项目。与Github类似，GitLab能够浏览源代码，管理缺陷和注释。可以管理团队对仓库的访问，它非常易于浏览提交过的版本并提供一个文件历史库。团队成员可以利用内置的简单聊天程序(Wall)进行交流。它还提供一个代码片段收集功能可以轻松实现代码复用，便于日后有需要的时候进行查找。 首先检查实验用虚拟机配置环境：
root@docker-server1:~# lsb_release -a #检查ubuntu版本信息
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.1 LTS
Release: 22.04
Codename: jammy
root@docker-server1:~# cat /etc/issue
Ubuntu 22.04.1 LTS \n \l
root@docker-server1:~# uname -r #检查内核版本
5.15.0-50-generic
root@docker-server1:~# free -m #检查内存信息，Gil顺利运行需要留足2GB以上内存空间
total used free shared buff/cache available
Mem: 3889 2874 439 1 575 652
Swap: 0 0 0
使用xftp上传软件包至当前目录，检查gitlab软件包内容，安装软件包：
root@docker-server1:~# dpkg -c gitlab-ce_15.4.3-ce.0_amd64.deb #检查软件包内容
root@docker-server1:~# dpkg -i gitlab-ce_15.4.3-ce.0_amd64.deb #安装软件包组件
Selecting previously unselected package gitlab-ce.
(Reading database ... 109390 files and directories currently installed.)
Preparing to unpack gitlab-ce_15.4.3-ce.0_amd64.deb ...
Unpacking gitlab-ce (15.4.3-ce.0) ...
Setting up gitlab-ce (15.4.3-ce.0) ...
It looks like GitLab has not been configured yet; skipping the upgrade script.
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Thank you for installing GitLab!
GitLab was unable to detect a valid hostname for your instance.
Please configure a URL for your GitLab instance by setting external_url
configuration in /etc/gitlab/gitlab.rb file.
Then, you can start your GitLab instance by running the following command:
sudo gitlab-ctl reconfigure
For a comprehensive list of configuration options please see the Omnibus GitLab readme
https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md
Help us improve the installation experience, let us know how we did with a 1 minute survey:
https://gitlab.fra1.qualtrics.com/jfe/form/SV_6kVqZANThUQ1bZb?installation=omnibus&release=15-4
安装成功以后，出现GITLAB的logou画面：
