1. 這是有人專門做好對編譯對應平臺的docker image（https://github.com/messense/rust-musl-cross）.
| Rust toolchain | Cross Compile Target | Docker Image Tag |
|---|---|---|
| stable | x86_64-unknown-linux-musl | x86_64-musl |
| stable | i686-unknown-linux-musl | i686-musl |
| stable | arm-unknown-linux-musleabi | arm-musleabi |
| stable | arm-unknown-linux-musleabihf | arm-musleabihf |
| stable | armv7-unknown-linux-musleabihf | armv7-musleabihf |
| stable | armv5te-unknown-linux-musleabi | armv5te-musleabi |
| stable | mips-unknown-linux-musl | mips-musl |
| stable | mipsel-unknown-linux-musl | mipsel-musl |
用法：
（1）先拉取對應鏡像 docker pull messense/rust-musl-cross:armv7-musleabihf
（2）爲了方便使用，把docker命令做成別名
alias rust-musl-builder='docker run --rm -it -v "$(pwd)":/home/rust/src messense/rust-musl-cross:armv7-musleabihf'
（3）這樣就可以用"rust-musl-builder"這個命令簡化使用
rust-musl-builder cargo build --release
（4）上面就和使用普通cargo打包一樣了，調這個命令其它就相當於掛載本地項目到容器中打包。
（5）以上鏡像爲了打包靜態單體，鏡像中已包含了（爲了有這個教程，就是在centos中打包靜態單體時需要openssl，解決了普通openssl的打包，發現靜態打包還需要musl-gcc，而centos找了半天也沒有找到，所以就想到了docker省得自己搭環境了）
- The standard
musl-libclibraries. - OpenSSL, which is needed by many Rust applications.
2.使用另一個鏡像，其它是先找到這個鏡像的（https://github.com/emk/rust-musl-builder）
rust-musl-builder uses musl-libc, musl-gcc, and the new rustup target support. It includes static versions of several libraries:
- The standard
musl-libclibraries. - OpenSSL, which is needed by many Rust applications.
libpq, which is needed for applications that usedieselwith PostgreSQL.libz, which is needed bylibpq.
支持緩存構建：
You may be able to speed up build performance by adding the following -v commands to the rust-musl-builder alias:
-v cargo-git:/home/rust/.cargo/git
-v cargo-registry:/home/rust/.cargo/registry
-v target:/home/rust/src/target
You will also need to fix the permissions on the mounted volumes:
rust-musl-builder sudo chown -R rust:rust \
/home/rust/.cargo/git /home/rust/.cargo/registry /home/rust/src/target
用法（和上面的用法一樣，大部分用docker交叉編譯都類似，鏡像裏幫你做好了編譯環境所需要的一起，尤其是牆的問題更坑）：
1.
alias rust-musl-builder='docker run --rm -it -v "$(pwd)":/home/rust/src ekidd/rust-musl-builder'
2. rust-musl-builder cargo build --release
PS:若在運行編譯時，報權限問題，chmod 777 -R 項目路徑授權。