TOC
前言
CI 过程中拉取仓库的注意点
备注：本文安装指南基于 Ubuntu 16.04，在 Centos 上某些安装步骤的命令可能需要稍作改动。
CI Hugo博客时子模块注意点
在 fork 了 hugo 的主题仓库后，hugo 使用了自己仓库的 hugo 主题，但是在 CI 过程中一直提示没有权限访问仓库。
Running with gitlab-runner 11.3.0-rc1 (861c565e)
on docker-auto-scale 4e4528ca
Using Docker executor with image registry.gitlab.com/pages/hugo:latest ...
Pulling docker image registry.gitlab.com/pages/hugo:latest ...
Using docker image sha256:e49e435cc0445a3d9f8b2fe75c25fd226ed240940ed8c8c1c00aa339e4498144 for registry.gitlab.com/pages/hugo:latest ...
Running on runner-4e4528ca-project-8449745-concurrent-0 via runner-4e4528ca-srm-1537615348-42d15321...
Cloning repository...
Cloning into '/builds/liangyuanpeng/liangyuanpeng.gitlab.io'...
Checking out 643a5fbf as master...
Updating/initializing submodules recursively...
Submodule 'themes/hugo-theme-cleanwhite' (git@github.com:liangyuanpeng/hugo-theme-cleanwhite.git) registered for path 'themes/hugo-theme-cleanwhite'
Cloning into '/builds/liangyuanpeng/liangyuanpeng.gitlab.io/themes/hugo-theme-cleanwhite'...
fatal: cannot run ssh: No such file or directory
fatal: unable to fork
fatal: clone of 'git@github.com:liangyuanpeng/hugo-theme-cleanwhite.git' into submodule path '/builds/liangyuanpeng/liangyuanpeng.gitlab.io/themes/hugo-theme-cleanwhite' failed
Failed to clone 'themes/hugo-theme-cleanwhite'. Retry scheduled
Cloning into '/builds/liangyuanpeng/liangyuanpeng.gitlab.io/themes/hugo-theme-cleanwhite'...
fatal: cannot run ssh: No such file or directory
fatal: unable to fork
fatal: clone of 'git@github.com:liangyuanpeng/hugo-theme-cleanwhite.git' into submodule path '/builds/liangyuanpeng/liangyuanpeng.gitlab.io/themes/hugo-theme-cleanwhite' failed
Failed to clone 'themes/hugo-theme-cleanwhite' a second time, aborting
ERROR: Job failed: exit code 1
最后发现问题出在使用了 git 协议拉取仓库，导致没有权限访问。将协议改为 https 协议即可。
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