[Unit]
Description=Run container setup commands
After=multi-user.target
ConditionPathExists=/setup_chatmail_docker.sh

[Service]
Type=oneshot
ExecStart=/bin/bash /setup_chatmail_docker.sh
RemainAfterExit=true
WorkingDirectory=/opt/chatmail
PassEnvironment=<envs_list>

[Install]
WantedBy=multi-user.target