Add hints on how to cache builds
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README.md
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README.md
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@ -22,6 +22,20 @@ Binaries will be written to `target/$TARGET_ARCHITECTURE/release`. By default it
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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 make static release binaries using TravisCI and GitHub, or you can copy your Rust application into an [Alpine Linux container][]. See below for details!
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## Caching builds
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You may be able to speed up build performance by adding the following `-v` commands to the `rust-musl-builder` alias:
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```
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-v cargo-git:/home/rust/.cargo/git -v cargo-registry:/home/rust/.cargo/registry
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```
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You will also need to fix the permissions on the mounted volumes:
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```sh
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rust-musl-builder sudo chown -R rust:rust /home/rust/.cargo/git /home/rust/.cargo/registry
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```
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## How it works
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`rust-musl-builder` uses [musl-libc][], [musl-gcc][], and the new [rustup][] `target` support. It includes static versions of several libraries:
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