Setting up PHP-FPM, Nginx, Mariadb on CentOs using docker

I'm trying to move from from using VirtualBox as my development environment to docker.

With VirtualBox, I mainly install PHP-FPM, Nginx and Mariadb but in Docker, I can't replicate the same stack despite trying for some days.

Out of all the LEMP/LAMP stack docker guides, only this one chentex/docker-nginx-centos works for me:

Here is the code from the Dockerfile

FROM centos:centos7
LABEL maintainer="Vicente Zepeda <chente.z.m@gmail.com>"

ENV nginxversion="1.12.2-1" \
    os="centos" \
    osversion="7" \
    elversion="7_4"

RUN yum install -y wget openssl sed &&\
    yum -y autoremove &&\
    yum clean all &&\
    wget http://nginx.org/packages/$os/$osversion/x86_64/RPMS/nginx-$nginxversion.el$elversion.ngx.x86_64.rpm &&\
    rpm -iv nginx-$nginxversion.el$elversion.ngx.x86_64.rpm &&\
    sed -i '1i\
    daemon off;\
    ' /etc/nginx/nginx.conf

CMD ["nginx"]

This works right out of the box, and I can see a default page on http://localhost

The only problem is that, it does not contain PHP-FPM and Mariadb.

I tried to alter the file and add PHP-FPM and Mariadb, but I found out on reddit that each container should have on service, as in one container for nginx, and another for php ... and I'm lost on how to make that

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