Multiple applications running with docker - php

Question

I have a symfony application running with docker following this repository
https://github.com/maxpou/docker-symfony and everything is ok.
But now I am starting another symfony project and I cloned the same docker-symfony repository, but I get this error doing docker-compose up -d
ERROR: for nginx Cannot start service nginx: driver failed
programming external connectivity on endpoint
symfony2restapidocker_nginx_1
(d736a2c930368e1cd94f71e502bfe3ffb991cf8d63ae0b0d412c189c8e5b504f):
Bind for 0.0.0.0:80 failed: port is already allocated
Is it not possible to have two applications running at the same time each with its docker?
Thanks

Answer 1

Port 80 is already allocated for some other application/service.
Try to stop 80 port running application. otherwise you can change it your current application port to some other like
Instead of 80 use other port number 7080, etc. something else

Answer 2

Yes it is possible.
The error that you are encoutering is caused by the port 80 being already reserved for the first nginx container. If you want to start the same container you need to give it a new port on the host.
The docker-compose file must be updated for the second run as such:
version: '2'
services:
db:
image: mysql
volumes:
- "./.data/db:/var/lib/mysql"
environment:
MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
MYSQL_DATABASE: ${MYSQL_DATABASE}
MYSQL_USER: ${MYSQL_USER}
MYSQL_PASSWORD: ${MYSQL_PASSWORD}
php:
build:
context: php7-fpm
args:
TIMEZONE: ${TIMEZONE}
volumes:
- ${SYMFONY_APP_PATH}:/var/www/symfony
- ./logs/symfony:/var/www/symfony/app/logs
nginx:
build: nginx
ports:
- 82:80
volumes_from:
- php
volumes:
- ./logs/nginx/:/var/log/nginx
elk:
image: willdurand/elk
ports:
- 83:80
volumes:
- ./elk/logstash:/etc/logstash
- ./elk/logstash/patterns:/opt/logstash/patterns
volumes_from:
- php
- nginx
In this case, port 82 and 82 will be reserved for the new containers nginx and elk respectively.