Dockerfile for Android CI

My general usage (very up-to-date) Docker image for Android CI

Contains:

Based on ubuntu:18.04
with wget, curl, zip, python, pip, git, make, gcc (and other build-essential)
AdoptJDK11 - https://github.com/AdoptOpenJDK
Platform tools 30.0.3
Build Tools 30.0.0
SDK API 28 & 30
Compressed and squashed into one layer.

NOTE: This image does not contain NDK. You can use this for an image with the latest NDK. Also, check out a Proof-of-Concept Docker image that has Android Studio running inside Docker!

Other images:

An even slimmer image (without the APIs and Build-Tools).
Android latest SDK and latest NDK image.
Android latest SDK and latest Bazel image.

Accepting licenses

Getting an error when building Android with this Docker image? Something like this:

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':app'.
> You have not accepted the license agreements of the following SDK components:
  [Android SDK Platform 25, Android SDK Build-Tools 25.0.1].
  Before building your project, you need to accept the license agreements and complete the installation of the missing components using the Android Studio SDK Manager.
  Alternatively, to learn how to transfer the license agreements from one workstation to another, go to http://d.android.com/r/studio-ui/export-licenses.html

You'll need to create licenses folder with license files under ${ANDROID_HOME}. Accept the licenses on you local machine then create the same files inside the Docker image, using your CI script. Something like this:

echo -e "8933bad161af4178b1185d1a37fbf41ea5269c55\c" > ${ANDROID_HOME}/licenses/android-sdk-license
echo -e "79120722343a6f314e0719f863036c702b0e6b2a\n84831b9409646a918e30573bab4c9c91346d8abd\c" > ${ANDROID_HOME}/licenses/android-sdk-preview-license
echo -e "8403addf88ab4874007e1c1e80a0025bf2550a37\c" > ${ANDROID_HOME}/licenses/intel-android-sysimage-license

Also, due to a known bug, you'll need to run gradle twice. So:

./gradlew dependencies || true
./gradlew clean

Common commands

Build image: docker build -t menny/android:latest .

Pull from Docker Hub: docker pull menny/android:latest

To run image (and attach to STDIN/STDOUT): docker run -i -t menny/android:latest

General Docker commands:

To stop all Docker containers: docker stop $(docker ps -a -q)

To remove all Docker containers: docker rm -f $(docker ps -a -q)