Very small rust docker image.
This is an example project on how to build very small docker images for a rust project. The resulting image for a working hello world was 5.69MB in the case of Alpine 3.16. Alpine versions have changed in size with past releases (see below a table with historic sizes of the docker images). Using end-of-life Alpine/Rust releases is not advised (even if they might be slightly smaller). Checked sizes with docker system df -v
| Alpine | Size |
|---|---|
| alpine:3.19 | 8.22MB |
| alpine:3.18 | 8.22MB |
| alpine:3.17 | 7.95MB |
| alpine:3.16 | 5.69MB |
| alpine:3.15 | 5.74MB |
| alpine:3.14 | 5.73MB |
This repo is trying to keep the docker overhead to a minimum without sacrificing performance or the usability implications of using FROM scratch. If you want to reduce the binary size further you might be interested in johnthagen/min-sized-rust.
You don't need to install anything besides docker. Build with docker build -t mini-docker-rust . and run with docker run mini-docker-rust.
See Dockerfile.