I’m a newbie using Docker, and I don’t understand something. If I’m using the official Dockerfile used to build the official WordPress image, we start with:
FROM php:5.6-apache
Then, to install extensions and models we have to use:
RUN apt-get [install or Update]
My question is: Why we are using apt-get if we are not specifying in FROM that our image is a Debian based distro? Could I use yum?
The WordPress image Dockerfile does begin with
FROM php:5.6-apache.But the
php:5.6-apacheimage Dockerfile starts withFROM debian:jessie.Hence the
apt-get.Each image builds up based on another base image.