Switched from Debian to Alpine Linux for significant improvements:
- Image size: ~5MB vs ~100MB (95% smaller)
- Security: Minimal attack surface, no glibc vulnerabilities
- Static linking: No glibc version issues ever again
- Uses rust:alpine builder with x86_64-unknown-linux-musl target
- Static binaries with RUSTFLAGS='-C target-feature=+crt-static'
Fixes the GLIBC_2.38 error permanently by avoiding glibc entirely.
Fixed glibc version mismatch between rust:latest builder (glibc 2.38+)
and debian:bookworm-slim runtime (glibc 2.36). This was causing:
- ./companies: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.38 not found
- ./payments: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.38 not found
- Similar errors for users service
Updated all 19 service Dockerfiles + Dockerfile.template to use
debian:trixie-slim which includes glibc 2.38+.
