Dockerfile

FROM python:3.11-slim

ENV DEBIAN_FRONTEND=noninteractive \
    ANDROID_SDK_ROOT=/opt/android-sdk \
    ANDROID_HOME=/opt/android-sdk \
    JAVA_HOME=/usr/lib/jvm/java-21-openjdk-amd64 \
    GRADLE_USER_HOME=/tmp/.gradle \
    HF_HOME=/tmp/hf_cache \
    PATH=/opt/android-sdk/cmdline-tools/latest/bin:/opt/android-sdk/platform-tools:/usr/lib/jvm/java-21-openjdk-amd64/bin:/opt/gradle-8.7/bin:$PATH

# Base tooling
RUN apt-get update && apt-get install -y --no-install-recommends \
    git curl wget unzip zip ca-certificates \
    openjdk-21-jdk-headless \
    build-essential cmake \
    && rm -rf /var/lib/apt/lists/*

# Android cmdline tools + SDK
RUN mkdir -p $ANDROID_SDK_ROOT/cmdline-tools && \
    cd /tmp && \
    wget -q https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O cmdtools.zip && \
    unzip -q cmdtools.zip && \
    mv cmdline-tools $ANDROID_SDK_ROOT/cmdline-tools/latest && \
    rm cmdtools.zip && \
    yes | sdkmanager --licenses >/dev/null 2>&1 || true && \
    sdkmanager --install "platform-tools" "platforms;android-34" "build-tools;34.0.0" >/dev/null

# Gradle
RUN wget -q https://services.gradle.org/distributions/gradle-8.7-bin.zip -O /tmp/gradle.zip && \
    unzip -q /tmp/gradle.zip -d /opt && \
    ln -s /opt/gradle-8.7/bin/gradle /usr/local/bin/gradle && \
    rm /tmp/gradle.zip

# HF Spaces runs as user 1000
RUN useradd -m -u 1000 user && \
    mkdir -p /app /workspace /tmp/.gradle /tmp/hf_cache && \
    chown -R user:user /app /workspace /tmp/.gradle /tmp/hf_cache $ANDROID_SDK_ROOT

USER user
WORKDIR /app

COPY --chown=user:user requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

COPY --chown=user:user . .

EXPOSE 7860
CMD ["python", "app.py"]