Rebrand to installable/sh and add INSTALL command structure

[Copilot]

Rebranding from scaffoldly/run to installable/sh + Add INSTALL command

Rebranding Tasks

• Update go.mod module path from github.com/scaffoldly/run to github.com/installable-sh/docker
• Update User-Agent from run/1.0 (scaffoldly) to run/1.0 (installable)
• Update README.md references:
  • Replace scaffoldly/run with installable/sh
  • Remove ghcr.io reference (not publishing there for now)
  • Update User-Agent documentation
  • Clarify published on Docker Hub as installable/sh
• Update examples/hello-world/Dockerfile:
  • Replace scaffoldly/run with installable/sh
  • Update example script URL reference
• Update examples/claude-code/Dockerfile:
  • Replace scaffoldly/run with installable/sh
• GitHub Actions workflow already uses correct IMAGE_NAME

New INSTALL Command Tasks

• Refactor code into cmd/run/main.go and cmd/install/main.go structure
• Create shared internal/certs package for embedded CA certificates
• RUN command fully functional with all original features
• INSTALL command prints "coming soon" to stderr
• Update Dockerfile to build both RUN and INSTALL binaries
• Dockerfile now copies CA certificates from Alpine during build (certs in repo are dev placeholders)
• Update README.md to document both commands and CA cert behavior
• Update .gitignore to only ignore binaries (/RUN, /INSTALL), not /run directory
• Format all Go files with gofmt
• Tested both commands build and work correctly
• Code review completed
• Security scan completed (0 vulnerabilities)

Summary

All rebranding complete. Project now provides both RUN (fully functional) and INSTALL (placeholder) commands using proper Go project structure with cmd/ layout. Container published to Docker Hub as installable/sh. Docker build now uses Alpine's CA certificates instead of dev placeholders.

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[cnuss]

@copilot can you make sure you copy the certificates from alpine ca-certificates? the certs in this repo are just to make the compiler happy for it l local dev

[Copilot]

@copilot can you make sure you copy the certificates from alpine ca-certificates? the certs in this repo are just to make the compiler happy for it l local dev

Done! The Dockerfile now copies CA certificates from Alpine's ca-certificates package during the build process. The certificates in the repo remain as placeholders for local development. (commit 1e2f1ef)