June 12, 2018

Running Multiple Processes

^ Ad space to help offset hosting costs :D

We need to get both PHP and Nginx running on this container at the same time. We'll use Supervisord to do that.

Supervisord

We create a Supervisord configuration file, and then add it into our Docker container. Here's the new configuration file:

[supervisord]
nodaemon=true

[program:nginx]
command=nginx
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0

[program:php-fpm]
command=php-fpm7.2
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0

Dockerfile Update

Then we can update the Dockerfile and rebuild it.

The Dockerfile:

FROM ubuntu:18.04

LABEL maintainer="Chris Fidao"

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update \
    && apt-get install -y gnupg tzdata \
    && echo "UTC" > /etc/timezone \
    && dpkg-reconfigure -f noninteractive tzdata

RUN apt-get update \
    && apt-get install -y curl zip unzip git supervisor sqlite3 \
       nginx php7.2-fpm php7.2-cli \
       php7.2-pgsql php7.2-sqlite3 php7.2-gd \
       php7.2-curl php7.2-memcached \
       php7.2-imap php7.2-mysql php7.2-mbstring \
       php7.2-xml php7.2-zip php7.2-bcmath php7.2-soap \
       php7.2-intl php7.2-readline php7.2-xdebug \
       php-msgpack php-igbinary \
    && php -r "readfile('http://getcomposer.org/installer');" | php -- --install-dir=/usr/bin/ --filename=composer \
    && mkdir /run/php \
    && apt-get -y autoremove \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* \
    && echo "daemon off;" >> /etc/nginx/nginx.conf

ADD default /etc/nginx/sites-available/default
ADD supervisord.conf /etc/supervisor/conf.d/supervisord.conf

CMD ["supervisord"]

We add the Supervisord configuration, edit Nginx to not run as a daemon, and then add a default CMD, telling the container to start supervisord by default, if no other command is given.

And then we rebuild the image:

docker build -t shippingdocker/app:latest \
    -f docker/app/Dockerfile \
    docker/app

Looking for a deeper dive into Docker?

Sign up here to get a preview of the Shipping Docker course! Learn how to integrate Docker into your applications and develop a workflow to make using Docker a breeze!

All Topics