Use Automated Builds on Docker Hub for easy Continuous Integration of Node.js 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 Node.js environment for the sample project, then uses
npmto install dependencies and run the project's tests during image creation. The image ENTRYPOINT and default command are set to
docker runwill default to launching the Node.js project within the container. Tests are run 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 Node.js project that responds to
Dockerfileinto any Node.js project that responds to
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="mynodeapp" .
To start the local image, run
docker run -i -t -P mynodeapp
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