Is possible to have PHP + MongoDb + Nginx in the same Dockerfile? - php

Question

I need to have the 3 services running into only one docker container. I have this "system" done in one docker-compose, but due to some limitations I need to have it into only one dockerfile. The application that I want to run is in PHP (with Symfony) + MongoDb.
Right now, I'm executing this command:
sudo docker run -p 9091:80 -p 27017:27017 myapp
And the maximum that I get is a 502 error when I browse to localhost:9091.
Thanks
Dockerfile:
FROM php:7.3-fpm-stretch
COPY --from=composer /usr/bin/composer /usr/bin/composer
RUN apt update
RUN apt install -y \
nginx \
mongodb
COPY nginx.conf /etc/nginx/nginx.conf
RUN pecl install mongodb
RUN docker-php-ext-enable mongodb
RUN service nginx start
RUN service mongodb start
EXPOSE 9091
EXPOSE 27017
COPY entrypoint.sh /
WORKDIR /usr/www
ENTRYPOINT ["/entrypoint.sh"]
COPY . /usr/www
entrypoint.sh
#!/bin/bash
set -e -u
service nginx start
service mongodb start
tail -f /dev/null
nginx.conf
events {
worker_connections 1024;
}
http {
server {
listen 80;
server_name localhost;
root /usr/www/public;
location / {
try_files $uri /index.php$is_args$args;
}
location ~ ^/index\.php(/|$) {
fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
fastcgi_split_path_info ^(.+\.php)(/.*)$;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
fastcgi_param DOCUMENT_ROOT $realpath_root;
}
error_log /dev/stderr debug;
access_log /dev/stdout;
}
}

Answer 1

Yes, it is possible, but it is not the recommended approach in the context of docker.
Limiting each container to one process is a good rule of thumb.
Decouple applications
Each container should have only one concern. Decoupling applications into multiple containers makes it easier to scale horizontally and reuse containers. For instance, a web application stack might consist of three separate containers, each with its own unique image, to manage the web application, database, and an in-memory cache in a decoupled manner.
So better to use docker-compose and launch three container and use the docker network for communication.
It will less or more likely this
or using docker-compose
As far the issue in your current as mentioned in the comment you are not starting PHP, better to check logs of the container.

Answer 2

The problem with your dockerfile is you are not starting php-fpm. You shall use supervisord to manage multiple services in a single container , This document explains this use case very clearly.
You can also refer this example for the complete supervisord conf for nginx,php-fpm and mysql .
As a piece of opinion ,It is unadvisable to run multiple services in a single container .