woahbase / alpine-maven Goto Github PK

This image containerizes Maven, a build automation tool along with its OpenJDK8 dependencies.

Current installed version is 3.5.4

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.

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

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

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 pom.xml is) at /home/alpine/project. Mounts PWD by default.

• Maven runs under the user alpine.

• Optionally, if you want to cache the jars/packages downloaded by maven, 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/.m2 folder.

Running make gets a shell.

# make
docker run --rm -it \
  --name docker_maven --hostname maven \
  -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 \
  --entrypoint /bin/bash \
  woahbase/alpine-maven:x86_64

The usual maven stuff. e.g clean pack a project with

docker run --rm -it \
  --name docker_maven --hostname maven \
  -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-maven:x86_64 \
  clean package

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

# make stop
docker stop -t 2 docker_maven

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

# make rm
docker rm -f docker_maven

Restart the container with

# make restart
docker restart docker_maven

Get a shell inside a already running container,

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

set user or login as root,

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

To check logs of a running container in real time

# make logs
docker logs -f docker_maven

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

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

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

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

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 MAVEN_VERSION=3.5.4 \
  -t woahbase/alpine-maven:x86_64 \
  .

To check if its working..

# make ARCH=x86_64 test
docker run --rm -it \
  --name docker_maven --hostname maven \
  -e PGID=1000 -e PUID=1000 \
  woahbase/alpine-maven:x86_64 \
  -version

And finally, if you have push access,

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

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

Maintained by WOAHBase.