build_dockerfile.py

from pathlib import Path

# Create a project folder structure with files needed
base_dir = Path("emulator_docker_snapshot_ready")
files = {
    "Dockerfile": """
FROM ubuntu:22.04

ENV DEBIAN_FRONTEND=noninteractive
ENV ANDROID_SDK_ROOT=/opt/android-sdk
ENV JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
ENV PATH="${ANDROID_SDK_ROOT}/emulator:${ANDROID_SDK_ROOT}/cmdline-tools/tools/bin:${ANDROID_SDK_ROOT}/platform-tools:$PATH"

# Install required tools and libraries
RUN apt update && apt install -y --no-install-recommends \\
    curl unzip wget git python3 openjdk-17-jdk \\
    libgl1-mesa-glx libgl1-mesa-dri mesa-utils qemu-kvm libvirt-daemon-system libvirt-clients \\
 && apt clean && rm -rf /var/lib/apt/lists/*

# Download command line tools
ARG ANDROID_SDK_VERSION=11076708
RUN mkdir -p ${ANDROID_SDK_ROOT}/cmdline-tools && \\
    wget -q https://dl.google.com/android/repository/commandlinetools-linux-${ANDROID_SDK_VERSION}_latest.zip && \\
    unzip commandlinetools-linux-${ANDROID_SDK_VERSION}_latest.zip -d ${ANDROID_SDK_ROOT}/cmdline-tools && \\
    mv ${ANDROID_SDK_ROOT}/cmdline-tools/cmdline-tools ${ANDROID_SDK_ROOT}/cmdline-tools/tools && \\
    rm commandlinetools-linux-${ANDROID_SDK_VERSION}_latest.zip

# Accept licenses and install emulator system image
RUN yes | sdkmanager --licenses && \\
    sdkmanager --install \\"platforms;android-34\\" \\"build-tools;34.0.0\\" \\"platform-tools\\" \\"emulator\\" \\"system-images;android-34;default;x86_64\\"

# Create AVD and snapshot
RUN echo "no" | avdmanager create avd -n prebuilt_avd -k "system-images;android-34;default;x86_64" --device "pixel" --force && \\
    emulator -avd prebuilt_avd -no-audio -no-window -no-boot-anim -gpu swiftshader_indirect -no-snapshot-load -wipe-data & \\
    sleep 60 && adb wait-for-device && adb shell getprop sys.boot_completed | grep 1 && \\
    adb emu avd snapshot save quickboot && adb kill-server

# Set working directory
WORKDIR /home/fortinet

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

CMD ["/entrypoint.sh"]
""",

    "entrypoint.sh": """
#!/bin/bash

DNS_SERVER=${DNS_SERVER:-8.8.8.8}
echo "[INFO] Starting emulator with DNS: $DNS_SERVER"

exec emulator -avd prebuilt_avd \\\
    -no-boot-anim \\\
    -gpu swiftshader_indirect \\\
    -read-only \\\
    -snapshot quickboot \\\
    -dns-server $DNS_SERVER
""",

    "build-matrix.sh": """
#!/bin/bash
set -e

for API in 30 32 34; do
  echo "Building emulator image for API $API..."
  docker build -t emulator:android-$API --build-arg ANDROID_API_LEVEL=$API .
done
"""
}

# Write files to disk
for name, content in files.items():
    path = base_dir / name
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(content.strip() + "\n")

import shutil
shutil.make_archive("emulator_docker_snapshot_ready", 'zip', base_dir)

from IPython.display import FileLink
FileLink("emulator_docker_snapshot_ready.zip")