This image is based on Alpine Linux image, which is only a 5MB image, and contains Rust with GCC.
Download size of this image is only:
$ echo -e 'fn main() { println!("Hello world"); }' > qq.rs
$ docker run --rm -v "$(pwd):/tmp" --workdir /tmp frolvlad/alpine-rust rustc -C target-feature=+crt-static ./qq.rs
Once you have run these commands you will have qq
executable in your current directory and if you
execute it, you will get printed 'Hello World'!