fix: use native installer + LD_PRELOAD shim for Claude Code on Alpine/musl

[soyjhonathandev]

Fixes issue

#13

• Replace deprecated npm install with Anthropic's native installer (curl install.sh | bash)
• Add posix_getdents shim compiled at build time to fix glibc symbol missing in musl (Alpine)
• Set LD_PRELOAD with libgcompat.so.0 + custom shim so it applies during install and runtime
• Remove nodejs npm from base image, add libgcc libstdc++ gcompat instead
• Configure DISABLE_AUTOUPDATER=1 and USE_BUILTIN_RIPGREP=0 for containerized use

[thecodeassassin]

The problem is that Anthropic deprecated that install method

We started out with that.

https://code.claude.com/docs/en/setup#deprecated-npm-installation

Not a great long term solution. This would be better:

anthropics/claude-code#29559 (comment)

[soyjhonathandev]

The problem is that Anthropic deprecated that install method

We started out with that.

https://code.claude.com/docs/en/setup#deprecated-npm-installation

Not a great long term solution. This would be better:

anthropics/claude-code#29559 (comment)

PR already updated and working with native installer!

[soyjhonathandev]

Hello, is there any change or action needed? I would like this PR to be merged, as I am very interested in exitbox in a vibecoding framework that I am working on.

[thecodeassassin]

Hello, is there any change or action needed? I would like this PR to be merged, as I am very interested in exitbox in a vibecoding framework that I am working on.

Nope, it's perfect. We can merge it. Thanks!