Add, upgrade or remove a tool in the sandbox image, or change its layout. Covers where versions live, both architectures, the Lima VM that provision.sh also provisions, what fctl and derived images rely on, the image's size, and verifying a change with a local build or the pull request's Image and Develop fctl workflows. Use for any change to Dockerfile, provision.sh, check.sh or check-fctl.sh.
Install
npx skills add hyperstructure/sandbox --skill change-the-imagenpx skills add hyperstructure/sandbox --skill change-the-image -a claude-code -gnpx skills add hyperstructure/sandbox --skill change-the-image -a codex -ggemini skills install https://github.com/hyperstructure/sandbox.git --path .claude/skills/change-the-imagegh skill install hyperstructure/sandbox change-the-imagegit clone --depth 1 https://github.com/hyperstructure/sandbox /tmp/hyperstructure__sandbox
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/hyperstructure__sandbox/.claude/skills/change-the-image ~/.claude/skills/change-the-image # Claude Code
cp -R /tmp/hyperstructure__sandbox/.claude/skills/change-the-image ~/.agents/skills/change-the-image # Codex, Cursor, Gemini CLI, Copilot, OpenCode