Cross Compilation using Docker

We can also use docker to cross compile on every platform and OS that runs docker and qemu:

1. Setup a docker custom builder

   docker buildx create \
     --name container-builder \
     --driver docker-container \
     --use --bootstrap
   

   If you are not using Docker-Desktop you might have to install QEMU

2. Create a docker compose-file.yml

   Here we are building a arm64 binary, so we set platform: linux/arm64

   services:
     build-container:
       image: rust:1.79-bookworm
       platform: linux/arm64
       command: bash -c "
           apt-get update &&
           apt-get install -y \
             libasound2-dev \
             libssl-dev \
             pkg-config &&
           curl -sSL https://api.github.com/repos/Spotifyd/spotifyd/tarball/v0.3.5 | tar xz -C /spotifyd --strip-components=1 &&
           cargo build --release &&
           cp /spotifyd/target/release/spotifyd /build/"
       working_dir: /spotifyd
       volumes:
         - ./:/build
   

3. Run docker compose up

   This will copy the build spotifyd binary in the current directory.