[Unit]
Description=aquarium service with docker compose
Requires=docker.service
After=docker.service

[Service]
Type=forking
RemainAfterExit=true
WorkingDirectory=path to the directory where you installed aquarium>
ExecStart=/usr/bin/docker-compose up -d --remove-orphans
ExecStop=/usr/bin/docker-compose down

[Install]
WantedBy=multi-user.target