Docker PHP Composer - php

Question

I've the following docker-compose file, and need some help with PHP composer part commented below:
version: '3'
services:
proxy:
image: jwilder/nginx-proxy
container_name: proxy
ports:
- '80:80'
- '443:443'
volumes:
- './certs:/etc/nginx/certs'
- '/var/run/docker.sock:/tmp/docker.sock:ro'
restart: always
web:
image: 'nginx:latest'
container_name: nginx
volumes:
- './volume1:/volume1'
- './volume2:/volume2'
- './volume3:/volume3'
- './site.conf:/etc/nginx/conf.d/site.conf'
environment:
- 'VIRTUAL_HOST=host1.local,host2.local,host3.local'
restart: always
php:
build: .
container_name: php
volumes:
- './volume1:/volume1'
- './volume2:/volume2'
- './volume3:/volume3'
restart: always
# Start How TODO this?
composer:
image: 'composer:latest'
container_name: composer
command: install
volumes:
- './volume1:/app'
- './volume2:/app'
- './volume3:/app'
# End HOW TODO this?
db:
image: mariadb
container_name: mariadb
ports:
- '3306:3306'
environment:
- MYSQL_ROOT_PASSWORD=toor
volumes:
- './db:/var/lib/mysql'
restart: always
pma:
image: phpmyadmin/phpmyadmin
container_name: pma
environment:
- PMA_ARBITRARY=1
- 'PMA_ABSOLUTE_URI=https://pma.local/'
- VIRTUAL_HOST=pma.local
restart: always
I've multiple app that needs to use composer, but I can't overwrite /app folder inside the composer container. Should I write a Dockerfile inside each single app folder? I don't want to specify the full path of PHP app inside the docker-compose, because I can have multiple version of an app (like 1.0, 2.0, ecc.ecc.).

Answer 1

Instead of putting the Composer configuration in your Docker Compose file, you should probably just run it once for each PHP app before you run the system.
docker run --rm -v $(pwd)/volume1:/app composer:latest install
This will run composer and bind the directory to your host filesystem so that the vendor folder will be available.