How the sandbox image reaches ghcr.io/hyperstructure/sandbox, and how to rebuild or repair it. Covers what starts the Image workflow (fctl releases, merges, Claude Code releases, the weekly rebuild), its tags and labels, running it by hand, checking a published image with or without Docker, and what to do when a run fails or the schedule stops.
Install
npx skills add hyperstructure/sandbox --skill publishnpx skills add hyperstructure/sandbox --skill publish -a claude-code -gnpx skills add hyperstructure/sandbox --skill publish -a codex -ggemini skills install https://github.com/hyperstructure/sandbox.git --path .claude/skills/publishgh skill install hyperstructure/sandbox publishgit clone --depth 1 https://github.com/hyperstructure/sandbox /tmp/hyperstructure__sandbox
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/hyperstructure__sandbox/.claude/skills/publish ~/.claude/skills/publish # Claude Code
cp -R /tmp/hyperstructure__sandbox/.claude/skills/publish ~/.agents/skills/publish # Codex, Cursor, Gemini CLI, Copilot, OpenCode