After we decide what the Chart service should look like (T370739) and we build it (T370975), we'll need to build a container image for it, so that it can be deployed on the beta cluster. This needs to be done before the Chart extension can be deployed on the beta cluster (T369945).
We should follow the steps at https://www.mediawiki.org/wiki/GitLab/Workflows/Deploying_services_to_production , but with the goal of deploying in beta cluster first.