Dockerfile

FROM ubuntu:22.04

# 1. Environment Variables
ENV DEBIAN_FRONTEND=noninteractive
ENV PUB_CACHE=/home/user/.pub-cache
ENV ANDROID_SDK_ROOT=/opt/android-sdk

# Browser environment variables
ENV CHROME_BIN=/usr/bin/chromium-browser
ENV CHROMIUM_FLAGS="--no-sandbox --disable-dev-shm-usage --disable-gpu --headless"
ENV DISPLAY=:99

# Merged PATH for Flutter, Dart, and Android Tools
ENV PATH="/opt/flutter/bin:/opt/flutter/bin/cache/dart-sdk/bin:${ANDROID_SDK_ROOT}/cmdline-tools/latest/bin:${ANDROID_SDK_ROOT}/platform-tools:${PATH}"

# 2. Install System Dependencies + Chromium + Virtual Display
RUN apt-get update && apt-get install -y \
    curl git unzip xz-utils zip libglu1-mesa python3 python3-pip wget openjdk-17-jdk \
    # Chromium browser
    chromium-browser \
    # Virtual display (needed for non-headless fallback)
    xvfb \
    # Chromium runtime dependencies
    libnss3 libnspr4 libatk1.0-0 libatk-bridge2.0-0 libcups2 \
    libdrm2 libxkbcommon0 libxcomposite1 libxdamage1 libxfixes3 \
    libxrandr2 libgbm1 libasound2 libpango-1.0-0 libpangocairo-1.0-0 \
    libgtk-3-0 libx11-xcb1 \
    # Python headless browser tools
    && pip3 install --no-cache-dir \
        selenium \
        playwright \
        pyppeteer \
    && rm -rf /var/lib/apt/lists/*

# 3. Install Playwright browsers (Chromium via Playwright)
RUN python3 -m playwright install chromium \
    && python3 -m playwright install-deps chromium

# 4. Install code-server
RUN curl -fsSL https://code-server.dev/install.sh | sh

# 5. Install Flutter SDK
RUN git clone https://github.com/flutter/flutter.git /opt/flutter

# 6. Install Android SDK Command Line Tools
RUN mkdir -p ${ANDROID_SDK_ROOT}/cmdline-tools && \
    wget https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O /tmp/tools.zip && \
    unzip /tmp/tools.zip -d ${ANDROID_SDK_ROOT}/cmdline-tools && \
    mv ${ANDROID_SDK_ROOT}/cmdline-tools/cmdline-tools ${ANDROID_SDK_ROOT}/cmdline-tools/latest && \
    rm /tmp/tools.zip

# 7. Setup User and Permissions
RUN useradd -m -u 1000 user && \
    chown -R user:user /opt/flutter && \
    chown -R user:user ${ANDROID_SDK_ROOT}

USER user
WORKDIR /home/user

# 8. Configure Android SDK & Licenses
RUN yes | sdkmanager --licenses && \
    sdkmanager "platform-tools" "platforms;android-34" "build-tools;34.0.0"

# 9. Activate Flutter and Extensions
RUN flutter config --android-sdk ${ANDROID_SDK_ROOT} && \
    flutter precache && \
    flutter doctor && \
    code-server --install-extension dart-code.flutter && \
    code-server --install-extension dart-code.dart-code

# 10. Optional: Pre-configure VS Code Settings
RUN mkdir -p /home/user/.local/share/code-server/User && \
    echo '{ \
    "dart.flutterSdkPath": "/opt/flutter", \
    "dart.sdkPath": "/opt/flutter/bin/cache/dart-sdk", \
    "python.defaultInterpreterPath": "/usr/bin/python3" \
    }' > /home/user/.local/share/code-server/User/settings.json

# 11. Final Setup
COPY --chown=user requirements.txt .
RUN pip3 install --no-cache-dir -r requirements.txt || echo "No requirements.txt found, skipping..."

EXPOSE 7860

# Start Xvfb virtual display + code-server
CMD Xvfb :99 -screen 0 1280x720x24 -ac & \
    code-server --bind-addr 0.0.0.0:7860 --auth none .