如何使用 docker 容器在两个不同的端口上启动相同的 docker 容器？

Question

Since Products and users use all the same files, just run on different ports, how can I just run the same container twice on two different ports?

   version: "3.8"
    services:
     users:
        build: 
            context: './backend'
        ports: 
            - "8081:8081"
        command: node services/auth.js
    
     products:
        build:
            context: './backend'
        ports: 
            - "8080:8080"
        command: node services/products.js

     reactapp: 
        stdin_open: true   
        tty: true
        build: 
            context: './frontend/expense-calculator'
        ports: 
            - "3000:3000"
        command: npm start

      

Answer 1

you can follow this article. https://medium.com/@karthi.net/how-to-scale-services-using-docker-compose-31d7b83a6648

The idea is simple, use one container and map docker container with the host machine's multiple port numbers. for this, you need to scale the container and tell in docker-compose.yml that my container's port is mapped with host machine's these ports like this.

 users:
    build: 
        context: './backend'
    ports: 
        - "8081-8082:8081"
    command: node services/auth.js

and docker-compose up command will be:

docker-compose -f "docker-composetest.yml" up --scale users=2 -d --build