Avoid using the newgrp command-line tool in the doc

[linghengqian]

Description

• Fixes The documentation should prompt users to install util-linux-extra to use newgrp docker roadmap#910 .
• Avoid using the newgrp command-line tool in the doc. I don't think requiring users to install an additional apt package is a good option.
• Also see DDEV adjustments for Ubuntu 26.04 ddev/ddev#8350 .

Related issues or tickets

• The documentation should prompt users to install util-linux-extra to use newgrp docker roadmap#910

Reviews

• Technical review
• Editorial review
• Product review

[netlify]

✅ Deploy Preview for docsdocker ready!

Name	Link
🔨 Latest commit	ec3d9ee
🔍 Latest deploy log	https://app.netlify.com/projects/docsdocker/deploys/6a255b73da7672000899f725
😎 Deploy Preview	https://deploy-preview-25301--docsdocker.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[devendrakushwah80]

Thanks for fixing the newgrp dependency problem. Is sudo -u $USER bash known to refresh group membership like newgrp docker does, uniformly across distributions? Maybe it's worth clarifying this for users following the post-installation steps.

[linghengqian]

uniformly across distributions?

Yes.

Maybe it's worth clarifying this for users following the post-installation steps.

What are you talking about? Isn't this exactly what current PRs are doing?

[devendrakushwah80]

Thanks for the clarification. My concern was mainly whether readers would understand that sudo -u $USER bash is intended to refresh the session with the updated group membership. If that's already clear from the surrounding documentation, then no further clarification is needed from my side.