🔧 update (cli): add --docker flag for container environments

[youhanasheriff]

Summary

This PR adds a "--docker" flag and auto-detection for Docker/container environments to route setup to the web-based flow, preventing the CLI prompts from hanging in non-TTY container environments.

Changes

• Added "--docker" flag that routes to web-based setup (same as "--web")
• Auto-detect Docker/container environments via:
  • CI, CONTAINER, DOCKER_CONTAINER env vars
  • /.dockerenv file
  • /proc/1/cgroup container indicators (docker, containerd, kubepods, lxc, podman)
• Added container detection warning in interactive setup to guide users
• Updated help text with "--docker" documentation

Testing

• Run tinyclaw setup --docker in a container environment
• Verify auto-detection works by running in Docker without flags
• Verify warning appears when running interactive setup in container

Related Issue

Closes #12

Checklist

• Code builds successfully (bun build)
• Tests pass (bun test)
• Documentation updated (help text)
• Follows Clean Commit convention
• CLA signed (will be prompted on PR open)

[CLAassistant]

All committers have signed the CLA.

[youhanasheriff]

Guys, I'm still working on this. I just created this to keep track of this

[warengonzaga]

@youhanasheriff put it into the draft if you still working on it, I will also update the container build flow and package build flow action to not run without significant changes to the codebase.

[warengonzaga]

Also, we are going to use a tool as moving forward before contributing to the project.
https://waren.build/contribute-now (I'll let you know once we are going to make this standard way to contribute, still fixing some bugs)

[youhanasheriff]

@warengonzaga, That's great. Thanks for letting me know.