Docker images for Android SDK and Emulators

Downloads the Android SDK and installs build tools and platform tools.

reactivecircus/android-sdk-base

Image versions (tags) can be found on Docker Hub

• Build tools - 30.0.3

ubuntu:bionic

• openjdk-14-jdk
• curl
• zip
• unzip
• git

Downloads Android SDK platform for a specific API level.

reactivecircus/android-sdk-<api-level>

The following images are available on Docker Hub:

• android-sdk-21
• android-sdk-22
• android-sdk-23
• android-sdk-24
• android-sdk-25
• android-sdk-26
• android-sdk-27
• android-sdk-28
• android-sdk-29
• android-sdk-30

reactivecircus/android-sdk-base:latest

Downloads and installs packages required for hardware acceleration with kvm, and the x86 / x86_64 Android system image for the <api-level>.

Note: host machine must support KVM in order to run accelerated x86 or x86_64 emulators.

reactivecircus/android-emulator-<api-level>

The following images are available on Docker Hub:

reactivecircus/android-sdk-<api-level>:latest

• libc++1

Running hardware-accelerated Emulators on cloud-hosted CI has been challenging due to KVM being required from the host VM. I wrote about it here. The following is a list of changes Google made to help improve this experience.

The new emulator 28.1.8 Canary introduced a headless emulator build without KVM dependency which is a blocker for running instrumented tests on most cloud CI services as the host machines usually don't have the required bios settings turned on for KVM. The android-emulator-28.Dockerfile has been updated to the canary build for experimenting with this. Related discussion with the Android Emulator Team on reddit

emulator-headless has been released to stable channel for a few months but is still not practically usable in a CI environment with limited memory.

emulator-headless is retired in Emulator 29.2.7 Canary. Headless emulator can be launched with emulator -no-window.

All images are automatically re-built and pushed weekly to package the latest stable version of the SDK components.