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Pull Request scala/scala3#19697 added all the necessary material related to the CI to the scala/scala3 repository.

Drone Testing

This repo contains the definition of the infrastructure used for dotty's CI, based Drone >= 1.0.0.

Prerequisites

Docker version 17.06 or higher and

GH Actions Self-Hosted Runners Setup

We host self-hosted GH Actions Runners on EPFL machines, lampsrv9 and lampsrv26. Each machine hosts 5 runners currently. They reside under /home/drone/github-actions-runners directory of the two servers, each has a separate subdirectory of the format runner-*.

Each runner is installed as a service at the server. Starting/restarting is done via runner-*/svc.sh script, e.g. sudo ./svc.sh start or sudo ./svc.sh restart. This is a standard script that comes with GH Actions Self-Hosted Runner software.

Otherwise the setup is standard for GH Actions Self-Hosted Runner. For more information on how to perform various actions with runners, see runners documentation.

Monitoring

Agents:

• lamprv9: CPU Memory
• lampsrv26: CPU Memory

Dotty Docker Image

This docker image is set up in order to run the tests for Dotty. It is currently pushed to lampepfl/dotty on Docker hub.

To build the image, simply:

$ cd dotty-docker
$ docker build --no-cache -t lampepfl/dotty:$(date +%F) .
$ docker login
$ docker push lampepfl/dotty:$(date +%F)

The new image should now appear in https://hub.docker.com/r/lampepfl/dotty/tags/. The next step is to open a PR againts https://github.com/lampepfl/dotty to change the tag of the docker image in ci.yaml.