Switch from catthehacker images to plain ubuntu:22.04:
- Add environment setup step to install basic tools
- Install Node.js from official repository
- Remove container tests that conflict with Podman setup
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
Add test repository to verify Forgejo runner deployment:
- Basic CI workflow testing system info and container runtime
- Test Podman container execution
- Simple Node.js test script
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
