Delete the commented-out Folly/Fizz/Wangle/mvfst/fbthrift/CacheLib RUN
blocks instead of carrying them as dead code; keep a short explanatory
comment in the Dockerfile and move the fuller rationale to
INCLUDED_LIBRARIES.md, scoped explicitly to alpine3.24 since debian13
and rockylinux9 are glibc-based and build the full Meta stack.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WGpSs9pKTbvPkmFvBaWhBp