CODEWITHSUNDEEP
dockerdocker-compose
HubertNNN
HubertNNN

Reputation: 2101

How to create a base image in docker-compose

I have a few images that share common code but are not exactly the same. Is there a way to create a base image in docker-compose so that it will not run itself when doing docker-compose up and I will be able to extend it in my Dockerfiles?

Here is example what I want to achieve:

version: '3'
services:
    php:
        build:
            context: .
            dockerfile: ./php/Dockerfile

    php-fpm:
        build:
            context: .
            dockerfile: ./php-fpm/Dockerfile

    php-cron:
        build:
            context: .
            dockerfile: ./php-cron/Dockerfile

    php-worker:
        build:
            context: .
            dockerfile: ./php-worker/Dockerfile

Base dockerfile

FROM php:7.2-fpm-alpine

RUN docker-php-ext-install bcmath
... and other extensions

And the other dockerfiles (with small variations):

php-fpm

FROM my-docker-compose:php

RUN docker-php-ext-install php-fpm

CMD php-fpm

php-cron

FROM my-docker-compose:php

COPY php/crontab /tmp/crontab
RUN /usr/bin/crontab -u www-data /tmp/crontab

CMD crond

Upvotes: 8

Views: 1981

Answers (1)

RQDQ
RQDQ

Reputation: 15569

You would typically accomplish this by storing your base images in a Docker registry. You can either store them in the public registry (https://hub.docker.com) or some private registry (either hosted in the cloud our on premise).

Here is more information on Docker registry: https://docs.docker.com/registry/

Some additional information on using base images: https://docs.docker.com/develop/develop-images/baseimages/

Upvotes: 1

Related Questions