slim now works with any Containerfile by injecting distro-agnostic scripts
at build time:
- /slim/init: mounts special filesystems, configures networking (static
QEMU slirp), sets up cgroup2, timezone, and rootless container prereqs.
Parses slim.cmd=<base64> from the kernel cmdline for runtime overrides,
otherwise execs /slim/exec.
- /slim/exec: generated from the image's CMD/ENTRYPOINT (via podman image
inspect), overridable via --cmd at build and run time.
Changes:
- New src/inject.rs: inspect image config, infer command, generate
/slim/exec script, inject /slim/ into mounted rootfs
- New src/scripts/slim-init.sh: the universal init script (include_str!)
- build.rs: rename --init to --cmd, inject scripts before packing,
drop Meta::save, restructure to ensure unmount always runs
- qemu.rs: hardcode init=/slim/init, add --cmd (base64 on cmdline),
drop Meta::load, add -no-reboot
- Remove src/meta.rs and meta.toml (no longer needed)
- Cargo.toml: add serde_json + base64, remove unused walkdir + cpio + toml
- Example Containerfiles simplified to plain FROM + CMD
- New example/test.sh for manual verification
- README updated for new workflow