docker-compose: using multiple Dockerfiles for multiple services

Question

I\'m using docker-compose and I\'d like to use different Dockerfiles for different services\' build steps. The docs seem to suggest to place different Dockerfiles in different d

Answer 1

You can use dockerfile argument in your docker-compose.yml to specify an alternate one for a specific service.

I don't know when it was added, since the discussion is old, but you can see it's in the reference https://docs.docker.com/compose/compose-file/#dockerfile

I've tried it yesterday and it works with me. It the base dir for my project I have Dockerfile and Dockerfile-service3 and in the docker-compose.yml:

version: '2'

services:
    service1:
        build:
            context: .
            args:
                - NODE_ENV=local
        ports:
            - "8765:8765"
        # other args skipped for clarity
    service2:
        build:
            context: .
            args:
                - NODE_ENV=local
        ports:
            - "8766:8766"
        # other args skipped for clarity
    service3:
        build:
            context: .
            dockerfile: Dockerfile-service3
            args:
                - NODE_ENV=local
        ports:
            - "8767:8767"
        # other args skipped for clarity
    service4:
        build:
            context: .
            args:
                - NODE_ENV=local
        ports:
            - "8768:8768"
        # other args skipped for clarity

In this way all services, except service3 will be built using the standard Dockerfile and service3 will be built using the Dockerfile-service3.