Use Automated Builds on Docker Hub for easy Continuous Integration of Play Framework projects
The official Docker Hub provides an Automated Builds feature for consistent building of Docker images. Another possible use case for this service, which hasn't received as much attention, is Continuous Integration. Simply provide a
Dockerfile for your project that runs tests during
docker build. Docker Hub's integration with GitHub and Bitbucket will pick up new commits, run your tests, and generate new Docker images when tests are successful. Further, the service offers webhooks, which can be utilized to extend this use case into Continuous Deployment.
Dockerfilecreates a suitable Java environment for Play Framework, then uses Typesafe Activator to test and build the project during image creation. The image ENTRYPOINT is set to run the optimized project so
docker runwill default to launching the Play project within the container. Testing and compilation are performed only once, during image creation, so all generated images are pre-certified and can be deployed and started without rerunning the tests
The remainder of the files in this repo provide an example Play Framework project that responds to the standard
Dockerfileinto any Play Framework project that responds to the standard
Update the ADD commands to include all project files needed for testing and running the app
To test with a local image, run
docker build --tag="myplayapp" .
To start the local image, run
docker run -i -t -P myplayapp
To use Docker Hub for CI, push the project and its Dockerfile to GitHub or BitBucket and configure your automated build
Consider using the webhooks feature to trigger deployments for successful builds