Public Repository

Last pushed: a year ago
Short Description
Rust build environment.
Full Description

Rust Docker container for easily building static Rust binaries

Public trusted images available on:

This repository is used to build a Docker image for the
Rust programming language and a few supporting tools. The
image includes rustc, rustdoc, cargo, git, SSL
certificates, and build essentials, so it should be able
to run cargo build on most projects out of the box. T
he path /source is a volume where you can mount a
Cargo project from the host machine.


The following command will drop you into a Bash shell with the
current directory on the host shared. From there you can run
rustc, rustdoc, and cargo as you please.

docker run -it --rm -v $(pwd):/source omnijarstudio/rust

Building for musl

Without dependencies

alias omnijar-musl-builder='docker run --rm -it -v "$(pwd)":/home/rust/src omnijarstudio/rust'
omnijar-musl-builder cargo build --release

This command assumes that $(pwd) is readable and writable by uid 1000,
gid 1000. It will output binaries in
target/x86_64-unknown-linux-musl/release. At the moment, it doesn't
attempt to cache libraries between builds, so this is best reserved for
making final release builds.

Deploying your Rust application

With a bit of luck, you should be able to just copy your application binary
from target/x86_64-unknown-linux-musl/release, and install it directly on
any reasonably modern x86_64 Linux machine. In particular, you should be
able to copy your Rust application into an
Alpine Linux container.

How it works

rust-musl-builder uses musl-libc, musl-gcc, and the new
rustup target support. It includes static versions of several

  • The standard musl-libc libraries.
  • OpenSSL, which is needed by many Rust applications.

Adding more C libraries

If you're using Docker crates which require specific C libraries to be
installed, you can create a Dockerfile based on this one, and use
musl-gcc to compile the libraries you need. For example:

FROM omnijarstudio/rust:musl

RUN VERS=1.2.8 && \
    cd /home/rust/libs && \
    curl -LO$VERS.tar.gz && \
    tar xzf zlib-$VERS.tar.gz && cd zlib-$VERS && \
    CC=musl-gcc ./configure --static --prefix=/usr/local/musl && \
    make && sudo make install && \
    cd .. && rm -rf zlib-$VERS.tar.gz zlib-$VERS

This usually involves a bit of experimentation for each new library, but it
seems to work well for most simple, standalone libraries.

If you need an especially common library, please feel free to submit a pull
request adding it to the main Dockerfile! We'd like to support popular
Rust crates out of the box.

Making static releases with Travis CI and GitHub

These instructions are inspired by rust-cross.

First, read the Travis CI: GitHub Releases Uploading page, and
run travis setup releases as instructed. Then add the following lines to
your existing .travis.yml file, replacing myapp with the name of your

language: rust
sudo: required
- linux
- osx
- stable
- docker
before_deploy: "./build-release myapp ${TRAVIS_TAG}-${TRAVIS_OS_NAME}"
  provider: releases
    secure: "..."
  file_glob: true
  file: "myapp-${TRAVIS_TAG}-${TRAVIS_OS_NAME}.*"
  skip_cleanup: true
    rust: stable
    tags: true

Next, copy build-release into your project
and run chmod +x build-release.

When you push a new tag to your project, build-release will automatically
build new Linux binaries using the Omnijar Rust builder, and new Mac binaries
with Cargo, and it will upload both to the GitHub releases page for your

For a working example, see faradayio/conductor.


MIT license.

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