Competition docker image

The competition docker image defines the docker environment in which the submissions of the competitions or benchmarks are run. Each competition can have a different docker environment, referred by its DockerHub name and tag.

Default competition docker image

The default competition docker image is codalab/codalab-legacy:py37. More information here: https://github.com/codalab/codalab-dockers

Set up another image

You can select another docker image:

• In the competition.yaml file, using docker_image: username/image:tag
• In the editor field "Competition Docker image" as shown in the following screenshot:

Building an image

If the default image does not suit your needs (missing libraries, etc.), you can either:

• Select an existing image from DockerHub
• Create your own image from scratch
• Create a custom image based on the Codalab image. (more information below)

If you wish to create a custom image based on the Codalab image, you can follow the steps below:

1. Install Docker
2. Sign up to DockerHub
3. docker run -itd -u root codalab/codalab-legacy:py37 /bin/bash
4. Use docker ps to find running container id
5. Now run docker exec -it -u root <CONTAINER ID> bash
6. Install anything you want at the docker container shell (apt-get install, pip install, etc.)
7. Exit the shell with exit
8. docker commit <CONTAINER ID> username/image:tag
9. docker login
10. docker push username/image:tag