Add dockerfile to xc for raspberry pi

xc/raspberry-pi/Dockerfile

@@ -0,0 +1,7 @@
+FROM debian:bullseye
+
+RUN apt update && apt install --no-install-recommends -y libssl-dev pkg-config libasound2-dev gcc-aarch64-linux-gnu curl ca-certificates libc6-dev-arm64-cross
+
+WORKDIR /workdir
+
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y -t 'aarch64-unknown-linux-gnu'

xc/raspberry-pi/build_container.sh

@@ -0,0 +1 @@
+docker build -t "rpi-xc-bullseye-aarch64" .

xc/raspberry-pi/do_xc_build.sh

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+set -x
+
+TARGET_TRIPLE="aarch64-unknown-linux-gnu"
+IMAGE_NAME="rpi-xc-bullseye-aarch64"
+
+CARGO_ARGS="build --bin refbox --target $TARGET_TRIPLE --release"
+CONTAINER_WORKDIR="/workdir/uwh-refbox-rs"
+
+CONTAINER_NAME="$(docker create -t -w "$CONTAINER_WORKDIR/" $IMAGE_NAME /root/.cargo/bin/cargo $CARGO_ARGS)"
+
+BASE_DIR="$(dirname "$0")/../.."
+
+for file in $(ls "$BASE_DIR" | grep -v target | grep -v xc); do
+    docker cp "$BASE_DIR/$file" "$CONTAINER_NAME:$CONTAINER_WORKDIR/"
+done
+
+docker start -a "$CONTAINER_NAME"
+
+docker cp "$CONTAINER_NAME:$CONTAINER_WORKDIR/target/release/refbox" "$(dirname "$0")/output/$TARGET_TRIPLE/"
+docker cp "$CONTAINER_NAME:$CONTAINER_WORKDIR/target/$TARGET_TRIPLE/release/refbox" "$(dirname "$0")/output/"
+
+docker rm "$CONTAINER_NAME"