ci workflow and docker files

docker/Dockerfile

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+FROM debian:12.7-slim
+
+# Install required packages
+RUN apt-get update && apt-get upgrade --yes
+
+RUN DEBIAN_FRONTEND=noninteractive apt-get install --yes --no-install-recommends \
+    git \
+    ssh \
+    make \
+    cmake \
+    gcc \
+    libc6-dev \
+    curl \
+    ca-certificates \
+    gcc-arm-none-eabi \
+    libnewlib-arm-none-eabi \
+    # remove for image size
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Rustup and select the nightly toolchain
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain nightly && \
+    . "$HOME/.cargo/env" && \
+    rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
+
+
+# Add the Rust toolchain binaries to PATH
+ENV PATH="/root/.cargo/bin:${PATH}"