mirror of
https://github.com/vhaudiquet/ecrou.git
synced 2026-11-12 22:22:44 +00:00
vhaudiquet
12a417645d
prepare was a freshness hybrid: runs of an unpinned OCI tag contacted the registry on every boot, and only ":latest" was checked - :main floated in name only. Docker's split is cleaner, so it is the model now: prepare (and run) trust a present entry and never touch the network on a hit - a cold cache pulls by default, since there is nothing to boot otherwise. RootfsCache::pull is the refresh operation: re-check any unpinned tag against the registry digest, re-resolve floating distro aliases, download only what moved, extract nothing. Digest pins stay immutable to both. The trade, as in docker: a stale :latest boots until someone pulls. Local archives are not pullable - the error says so.
ecrou
a small microVM runtime based on libkrun
Try ecrou in the terminal
Installation
ecrou is available as a strictly confined snap:
sudo snap install ecrou
sudo snap connect ecrou:kvm
Usage
$ ecrou run -it ubuntu
root@ecrou-vm-m2glhl:/#
Embed ecrou into your project
ecrou is both a library and a tiny CLI frontend around it. The library is embeddable into any project, allowing to use microVMs easily.
Rust
ecrou is a Rust library, which can just be called:
use ecrou::vm::RunOptions;
use ecrou::NoProgress;
fn main() -> ecrou::Result<std::process::ExitCode> {
let code = ecrou::vm::run(
&RunOptions {
image: "ubuntu:resolute".into(),
command: vec!["uname".into(), "-a".into()],
..RunOptions::default()
},
&NoProgress,
)?;
Ok(std::process::ExitCode::from(code.clamp(0, 255) as u8))
}