FROM docker.io/debian:12-slim as build
RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        xz-utils \
    && rm -rf /var/lib/apt/lists/*
ADD https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.24.4-stable.tar.xz /flutter.tar.xz
RUN tar -C /opt/ --exclude=cache -xJf /flutter.tar.xz

FROM docker.io/debian:12-slim
RUN useradd -m app
RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        curl \
        git \
        sdkmanager \
        unzip \
    && rm -rf /var/lib/apt/lists/*
RUN sdkmanager \
        "build-tools;35.0.0" \
        "cmdline-tools;9.0" \
        "platform-tools;35.0.2" \
        "platforms;android-35"
COPY --from=build --chown=app:app /opt/ /opt/
USER app
ENV PATH="/opt/flutter/bin:$PATH"
RUN flutter doctor