Deployment of NX.Explorer to fly.io

Great news

To make sure you have smaller image, do this for the Rustup step:

RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- --default-toolchain stable --profile minimal --target x86_64-unknown-linux-gnu -y

The --profile minimal part is crucial and it shaved off ~500MB from our Docker image. With the default profile Rust is installed as if it’s on a development machine. The minimal profile is for servers / apps.

The --target x86_64-unknown-linux-gnu thing you can skip but I prefer to be explicit – 50/50, your call.

More info here: Profiles - The rustup book

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