Docker Compose With Haproxy

docker-compose.yaml

version : '3'

services:
    ha:
        image: haproxy
        ports:
            - "8080:8080"
            - "8081:8081"
        volumes:
            - ./haproxy:/usr/local/etc/haproxy
    ws1:
        # image: wsapp
        build: ws
        # depends_on:
        #     redis:
        #         condition: service_healthy
        environment:
            - APPID=0001
        volumes:
            - ./ws/app/src:/home/node/app/src
    ws2:
        # image: wsapp
        build: ws
        # depends_on:
        #     redis:
        #         condition: service_healthy
        environment:
            - APPID=0002
        volumes:
            - ./ws/app/src:/home/node/app/src
    ws3:
        # image: wsapp
        build: ws
        # depends_on:
        #     redis:
        #         condition: service_healthy
        environment:
            - APPID=0003
        volumes:
            - ./ws/app/src:/home/node/app/src
    ws4:
        # image: wsapp
        build: ws
        # depends_on:
        #     redis:
        #         condition: service_healthy
        environment:
            - APPID=0004
        volumes:
            - ./ws/app/src:/home/node/app/src

    redis:
        image: redis

haproxy\haproxy.cfg

frontend ws
    bind *:8080
    mode http
    timeout client 1000s
    use_backend wsServers

backend wsServers
    mode http
    timeout server 1000s
    timeout connect 1000s 
    server s1 ws1:8081
    server s2 ws2:8081
    server s3 ws3:8081
    server s4 ws4:8081

ws\Dockerfile

# FOR DEV ENVIRONMENT
FROM node:latest
WORKDIR /home/node/app
# handled in compose with vol for dynamic remounts
# COPY ./app /home/node/app
RUN npm install npm@latest -g
# for hot reloading on save
RUN npm install nodemon -g
ADD ./app/package.json ./
RUN npm install
CMD npm run hotapp