Summary

When Docker is not installed, the self-host installer previously exited with a terse "missing required command: docker" message and no guidance. This adds clear, platform-specific installation instructions and next steps.

Root Cause

The generic need() helper produced an unhelpful error for the Docker dependency with no context or links.

Changes

Add check_docker() in install.sh to detect missing Docker and print helpful guidance to stderr (macOS/Windows/Linux links, mention OrbStack/Colima alternatives, remind to ensure Docker is running)
Replace need docker with check_docker() in the dependency check step
Preserve existing behavior for other dependencies and failure exit codes

Testing

sh -n install.sh (syntax check): passed

Related Issue

Closes #4346

Activity

fix(puter-js): replay the request after a token_auth_failed reauth

4abc752Sep 26

fix(install): improve Docker missing error with platform-specific instructions

70b3f56Oct 27

ProgrammerIn-wonderland3d ago

I do understand a docker change and while I would expect most self posters to at least know what docker is, I can accept that change

But it also seems you have an unrelated change about Network utils in your PR. Could that be removed?