Initial commit

.devcontainer/Dockerfile

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+# Start from the official Rust dev container image for Debian 12 (bookworm)
+FROM mcr.microsoft.com/devcontainers/rust:1-1-bookworm
+
+# Install ARM cross-compilation toolchain packages
+RUN apt-get update && \
+  apt-get install -y --no-install-recommends \
+    gdb-multiarch \
+    gcc-arm-linux-gnueabihf \
+    g++-arm-linux-gnueabihf \
+    binutils-arm-linux-gnueabihf && \
+  apt-get clean && \
+  rm -rf /var/lib/apt/lists/*
+
+RUN rustup target add armv7-unknown-linux-gnueabihf