Gradle Executable Container
This docker image includes OpenJDK 8 and Gradle 2.7 configured with Gradle as the entrypoint.
By defaut, running this image without any command will run
gradle -version in the /usr/bin/app directory.
Doing Something Actually Useful
To run something more interesting, say
gradle clean war, you should mount your project root in /app. For example, you can run the following to create a deployable web archive.
docker run --rm -v /path/to/your/project:/usr/src/app:rw niaquinto/gradle clean war
Of course, you can use any command here, including those dependent on plugins. For example, if you project inlcudes the Jetty plugin (by including
apply plugin: 'jetty' in its build.gradle) you can run the following command to start an instance of Jetty running a WAR of your application on port 8080 on the host.
docker run --rm -p 8080:8080 -v /path/to/your/project:/usr/src/app:rw niaquinto/gradle jettyRunWar
Changing the Default Behavior
Say you want
gradle clean war to run if you launch the container without any options. To do that, just make a new dockerfile like the following. Also, while your at it, you should change the user to match your development environment (so that running the container doesn't keep chown'ing your /build directory to root).
# Use this image as a base FROM niaquinto/gradle MAINTAINER your-name <firstname.lastname@example.org> # In case someone loses the Dockerfile RUN rm -rf /etc/Dockerfile ADD Dockerfile /etc/Dockerfile # Add your desired user and group RUN groupadd your-group-name RUN useradd -s /bin/bash -m -d /usr/src/app -g your-group-name your-user-name # Set your desired user as default USER your-user-name # Set your default behavior ENTRYPOINT ["gradle"] CMD ["clean", "war"]
Get the Image
To build this image yourself, run...
docker build github.com/niaquinto/docker-gradle
Or, you can pull the image from the central docker repository by using...
docker pull niaquinto/gradle