The sandbox environment is built and deployed with every merge to the master branch.
Login credentials are same as with the backend server. See https://gitlab.croptrust.org/genesys-pgr/catalog/genesys-catalog/issues/50
Each branch can also be deployed for review after the docker image is built using CI. See https://gitlab.croptrust.org/genesys-pgr/catalog/genesys-catalog-ui/pipelines to trigger "review deployments".