docker-compose.yml

version: "3"

services:
    APP1:
        container_name: DOCKER_DEMO_APP_1
        image: blackboardhub.ddns.net/bbdn/appn:1.5
        # Note the ports format is host:container - you may have many containers which use the same container port (e.g.:8080), but you can have only one use per host port (e.g. only one 80, only one 81, etc.)
        # Use the below ports setting if exposing service on specific ports.  # If exposing service in a Swarm or using reverse proxy then only provide the container portion as shown below.
        ports: #use ports when standalone - otherwise comment out this and the e next line and uncomment the  'export:' block
            - 80:6100 # specific host:container port - do not use with export 
        #export:
            # - 6100 # Docker provides host port, container port specified in app config. proxied container access based on service name e.g.: https://<service name:port>/... https://APP1:6100/...
        networks: #use only if not joining an existing network - see below network section. 
            - skynet #you'll want this to be the same as your nginx network.
        deploy:
            replicas: 2
            update_config:
              parallelism: 2
              delay: 10s
            restart_policy:
                condition: on-failure    
            placement:
                constraints: [node.role == worker]
        restart: unless-stopped # keep it running unless you explicitly stop it
        environment:
            - APP_NAME=_APP_007
            - APP_PATH=/a7 
            - APP_VERSION_PATH=/a7/weebles 
            - APP_VERSION=7
            - APP_PORT=6100 #should be above container port
        command:  npm start

networks:
    skynet: #match above if not using an existing shared network
    # if proxy and shared network then comment the above line and uncomment the below block
    #default:
    #  external:
    #    name: dockerdemo_skynet #created manually via docker network create dockerdemo_skynet or in a compose.yaml doc like here.