main.tf

resource "docker_service" "mysql-service" {
 name = "${var.mysql_network_alias}"

 task_spec {
   container_spec {
     image = "${docker_image.mysql_image.name}"

     env {
       MYSQL_ROOT_PASSWORD = "${var.mysql_root_password}"
     }

     mounts = [
       {
         target = "/var/lib/mysql"
         source = "${docker_volume.mysql_data_volume.name}"
         type   = "volume"
       }
     ]
   }
   networks = ["${docker_network.private_overlay_network.name}"]
 }
}



resource "docker_service" "ghost-service" {
 name = "ghost"

 task_spec {
   container_spec {
     image = "${docker_image.ghost_image.name}"

     env {
        database__client               = "mysql"
        database__connection__host     = "${var.mysql_network_alias}"
        database__connection__user     = "${var.ghost_db_username}"
        database__connection__password = "${var.mysql_root_password}"
        database__connection__database = "${var.ghost_db_name}"
     }
   }
   networks = ["${docker_network.public_overlay_network.name}", "${docker_network.private_overlay_network.name}"]
 }

 endpoint_spec {
   ports {
     target_port    = "2368"
     published_port = "${var.ghost_ext_port}"
   }
 }
}