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Alpine-Android

Container for Alpine Linux + OpenJDK8 + Android + Cordova

This image containerizes the Android command-line tools, along with Gradle and OpenJDK8 for building native apps, as well as Cordova for building hybrid projects, with its NPM dependencies.

Based on Alpine Linux from my alpine-openjdk8 image with the s6 init system overlayed in it.

The image is tagged respectively for the following architectures,

  • armhf
  • x86_64 (retagged as the latest )

armhf builds have embedded binfmt_misc support and contain the qemu-user-static binary that allows for running it also inside an x64 environment that has it.

Get the Image

Pull the image for your architecture it's already available from Docker Hub.

# make pull
docker pull woahbase/alpine-android:x86_64

Run

If you want to run images for other architectures, you will need to have binfmt support configured for your machine. multiarch, has made it easy for us containing that into a docker container.

# make regbinfmt
docker run --rm --privileged multiarch/qemu-user-static:register --reset

Without the above, you can still run the image that is made for your architecture, e.g for an x86_64 machine..

This images already has a user alpine configured to drop privileges to the passed PUID/PGID which is ideal if its used to run in non-root mode. That way you only need to specify the values at runtime and pass the -u alpine if need be. (run id in your terminal to see your own PUID/PGID values.)

Before you run..

  • Mount the project directory (where build.gradle or package.json is) at /home/alpine/project. Mounts PWD by default.

  • Builds run under the user alpine.

  • Optionally, if you want to cache the jars/packages downloaded by gradle, so that they're downloaded once, and reused in later builds, bind mount the user home directory (/home/alpine) somewhere in your local. The packages get cached inside the /home/alpine/.gradle folder.

Running make gets a shell.

# make
docker run --rm -it \
  --name docker_android --hostname android \
  -e PGID=1000 -e PUID=1000 \
  -c 512 -m 3072m \
  -v $PWD:/home/alpine/project \
  -v /etc/localtime:/etc/localtime:ro \
  -v /etc/hosts:/etc/hosts:ro \
  woahbase/alpine-android:x86_64

The usual android stuff. e.g dev build a project with

docker run --rm -it \
  --name docker_android --hostname android \
  -e PGID=1000 -e PUID=1000 \
  -c 512 -m 1024m \
  -v $PWD:/home/alpine/project \
  -v /etc/localtime:/etc/localtime:ro \
  -v /etc/hosts:/etc/hosts:ro \
  woahbase/alpine-android:x86_64 \
  -ec "gradle assembleDebug"

also for Cordova projects, you can dev build a project with

docker run --rm -it \
  --name docker_android --hostname android \
  -e PGID=1000 -e PUID=1000 \
  -c 512 -m 3072m \
  -v $PWD:/home/alpine/project \
  -v /etc/localtime:/etc/localtime:ro \
  -v /etc/hosts:/etc/hosts:ro \
  woahbase/alpine-android:x86_64 \
  -ec "npm install && npm run <your build target>"

Stop the container with a timeout, (defaults to 2 seconds)

# make stop
docker stop -t 2 docker_android

Removes the container, (always better to stop it first and -f only when needed most)

# make rm
docker rm -f docker_android

Restart the container with

# make restart
docker restart docker_android

Shell access

Get a shell inside a already running container,

# make shell
docker exec -it docker_android /bin/bash

set user or login as root,

# make rshell
docker exec -u root -it docker_android /bin/bash

To check logs of a running container in real time

# make logs
docker logs -f docker_android

Development

If you have the repository access, you can clone and build the image yourself for your own system, and can push after.

Setup

Before you clone the repo, you must have Git, GNU make, and Docker setup on the machine.

git clone https://github.com/woahbase/alpine-android
cd alpine-android

You can always skip installing make but you will have to type the whole docker commands then instead of using the sweet make targets.

Build

You need to have binfmt_misc configured in your system to be able to build images for other architectures.

Otherwise to locally build the image for your system. [ARCH defaults to x86_64, need to be explicit when building for other architectures.]

# make ARCH=x86_64 build
# sets up binfmt if not x86_64
docker build --rm --compress --force-rm \
  --no-cache=true --pull \
  -f ./Dockerfile_x86_64 \
  --build-arg ARCH=x86_64 \
  --build-arg DOCKERSRC=alpine-openjdk8 \
  --build-arg PGID=1000 \
  --build-arg PUID=1000 \
  --build-arg USERNAME=woahbase \
  --build-arg GRADLE_VERSION=$(GRADLE_VERSION) \
  --build-arg NPM_VERSION=$(NPM_VERSION) \
  --build-arg SDK_TARGET=$(SDK_TARGET) \
  --build-arg SDK_TOOLS_VERSION=$(SDK_TOOLS_VERSION) \
  --build-arg SDK_API_VERSION=$(SDK_API_VERSION) \
  -t woahbase/alpine-android:x86_64 \
  .

To check if its working..

# make ARCH=x86_64 test
docker run --rm -it \
  --name docker_android --hostname android \
  -e PGID=1000 -e PUID=1000 \
  woahbase/alpine-android:x86_64 \
  -ec 'sdkmanager --version; \
    sdkmanager --list | sed -e "/Available Packages/q" ; \
    gradle -version; \
    adb version; \
    npm --version; \
    cordova --version --no-telemetry';

And finally, if you have push access,

# make ARCH=x86_64 push
docker push woahbase/alpine-android:x86_64

Maintenance

Sources at Github. Built at Travis-CI.org (armhf / x64 builds). Images at Docker hub. Metadata at Microbadger.

Maintained by WOAHBase.