Applications are defined in a docker-compose.yml file. The applications lifecycle is managed via a systemd template service. On application start, docker-compose is invoked with the --compatibility flag to utilize options defined in the deploy key (format version 3), e.g. cpu and memory limiting.
Example service structure in WorkingDirectory path:
docker
├── service-a
│ └── docker-compose.yml
├── service-b
│ ├── data
│ └── docker-compose.yml
└── service-c
├── config.json
└── docker-compose.yml