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@@ -30,6 +30,26 @@ $ docker build -t my-rust-app .
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$ docker run -it --rm --name my-running-app my-rust-app
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```
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+This creates an image that has all of the rust tooling for the image, which is 1.8gb. If you just want the compiled application:
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+
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+```dockerfile
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+FROM rust:1.39 as builder
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+WORKDIR /usr/src/myapp
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+COPY . .
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+RUN cargo install --path .
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+
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+FROM debian:buster-slim
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+RUN apt-get update && apt-get install -y libssl
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+COPY --from=builder /usr/src/myapp /usr/local/bin/myapp
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+CMD ["myapp"]
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+```
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+
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+Note: Some shared libraries may need to be installed as shown in the installation of the libssl line above.
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+
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+This method will create an image that is less than 200mb. If you switch to using the Alpine-based rust image, you might be able to save another 60mb.
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+
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+See https://docs.docker.com/develop/develop-images/multistage-build/ for more information.
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+
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## Compile your app inside the Docker container
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There may be occasions where it is not appropriate to run your app inside a container. To compile, but not run your app inside the Docker instance, you can write something like:
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mkinney