Dockerfile

FROM debian:bookworm-slim AS builder

RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    libusb-1.0-0-dev \
    libncurses-dev \
    build-essential \
    cmake \
    git \
    pkg-config \
    ca-certificates \
    wget && \
    git clone --depth=1 https://github.com/rtlsdrblog/rtl-sdr-blog /tmp/rtl && \
    cmake -S /tmp/rtl -B /tmp/rtl/build -DINSTALL_UDEV_RULES=ON && \
    cmake --build /tmp/rtl/build --target install -j"$(nproc)" && \
    ldconfig && \
    rm -rf /tmp/rtl

# --- Final slim image ---
FROM debian:bookworm-slim

RUN apt-get update && \
    apt-get purge ^librtlsdr && \
    rm -rvf /usr/lib/librtlsdr* /usr/include/rtl-sdr* /usr/local/lib/librtlsdr* /usr/local/include/rtl-sdr* /usr/local/include/rtl_* /usr/local/bin/rtl_* && \
    apt-get install -y --no-install-recommends \
    libusb-1.0-0 \
    libncurses6 \
    kmod \
    ca-certificates \
    wget \
    libairspy0 && \
    wget -q https://github.com/AlexandreRouma/SDRPlusPlus/releases/download/nightly/sdrpp_debian_bookworm_aarch64.deb && \
    apt-get install -y ./sdrpp_debian_bookworm_aarch64.deb && \
    rm sdrpp_debian_bookworm_aarch64.deb && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Copy only the installed binaries/libs from builder
COPY --from=builder /usr/local/bin/rtl_* /usr/local/bin/
COPY --from=builder /usr/local/lib/librtlsdr* /usr/local/lib/
COPY --from=builder /etc/udev/rules.d/rtl-sdr.rules /etc/udev/rules.d/

RUN ldconfig && \
    echo 'blacklist dvb_usb_rtl28xxu' > /etc/modprobe.d/blacklist-dvb_usb_rtl28xxu.conf

WORKDIR /app
COPY entrypoint.sh .
RUN chmod +x entrypoint.sh

ENTRYPOINT ["./entrypoint.sh"]