大家好，
我正在尝试在一个只有 IPv6 的 VPS（ubuntu server 22.04 LTS）上安装 Discourse，但遇到了这个错误：
103:M 04 Feb 2023 17:27:33.313 # Redis is now ready to exit, bye bye...
FAILED
--------------------
Pups::ExecError: cd /var/www/discourse && sudo -H -E -u discourse git fetch --depth 1 origin tests-passed failed with return #<Process::Status: pid 145 exit 128>
Location of failure: /usr/local/lib/ruby/gems/3.1.0/gems/pups-1.1.1/lib/pups/exec_command.rb:117:in `spawn'
exec failed with the params {"cd"=>"$home", "hook"=>"code", "cmd"=>["sudo -H -E -u discourse git reset --hard", "sudo -H -E -u discourse git clean -f", "sudo -H -E -u discourse git remote set-branches --add origin main", "sudo -H -E -u discourse git remote set-branches origin $version", "sudo -H -E -u discourse git fetch --depth 1 origin $version", "sudo -H -E -u discourse git checkout $version", "mkdir -p tmp", "chown discourse:www-data tmp", "mkdir -p tmp/pids", "mkdir -p tmp/sockets", "touch tmp/.gitkeep", "mkdir -p /shared/log/rails", "bash -c \"touch -a /shared/log/rails/{production,production_errors,unicorn.stdout,unicorn.stderr,sidekiq}.log\"", "bash -c \"ln -s /shared/log/rails/{production,production_errors,unicorn.stdout,unicorn.stderr,sidekiq}.log $home/log\"", "bash -c \"mkdir -p /shared/{uploads,backups}\"", "bash -c \"ln -s /shared/{uploads,backups} $home/public\"", "bash -c \"mkdir -p /shared/tmp/{backups,restores}\"", "bash -c \"ln -s /shared/tmp/{backups,restores} $home/tmp\"", "chown -R discourse:www-data /shared/log/rails /shared/uploads /shared/backups /shared/tmp", "[ ! -d public/plugins ] || find public/plugins/ -maxdepth 1 -xtype l -delete"])}
bootstrap failed with exit code 128
** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one.
./discourse-doctor may help diagnose the problem.
364d2e22530738ab198f829e14d7d8f4d7513ec7da82e30b774381aaa28f2f63
按照这些指南，我修复了 IPv4 DNS 问题，但仍然无法完成 ./launcher rebuild app：
https://gist.github.com/unixfox/bb299ce4f862fad66ee2e6d9024bef98/
https://www.tecmint.com/set-permanent-dns-nameservers-in-ubuntu-debian/
Discourse 不兼容吗？
如果是，我将不再尝试。
