警告：containers/app.yml 文件是全局可读的。您可以通过运行以下命令来保护此文件：chmod o-rwx containers/app.yml

[JammyDodger]

Is this what the new line in the standard install guide is about?

sudo -s
git clone https://github.com/discourse/discourse_docker.git /var/discourse
cd /var/discourse
chmod 700 containers