ECS mount volume to nginx container - php

Question

I am trying to set up ECS in order to run my php/nginx docker application.
It works locally using this docker-compose.yml file:
version: '2'
services:
nginx:
image: NGINX-IMAGE
ports:
- 80:80
links:
- php
volumes_from:
- php
environment:
APP_SERVER_NAME: <ip>
php:
image: PHP-IMAGE
ports:
- 9000:9000
volumes:
- /var/www/html
The problem is that I can't get this working using ECS.
I don't know how to create the web-data volume and let nginx grap it using volumes_from.
I am trying to create the volume using this JSON:
volumes='[
{
"name": "webdata",
"host": {
"sourcePath": "/var/www/html"
}
}
]'
And then in my container-definitions to the php-container I add:
"mountPoints":
[
{
"sourceVolume": "webdata",
"containerPath": "/var/www/html",
"readOnly": false
}
]
However, when I do this, it adds the content from the host's /var/www/html folder to the /var/www/html folder of the containers.
My question is, how do I configure the volume to use the data from the php's /var/www/html container and let nginx access this data?

Answer 1

I managed to find a solution that suited the setup for ECS.
I simply created a VOLUME in my php Dockerfile referencing /var/www/html.
This means I longer need to reference the volume in the volumes section of the php container. And nginx will still be able to access the volume with volumes_from.
Update
This is my working task definition for ECS:
task_template='[
{
"name": "nginx",
"image": "NGINX_IMAGE",
"essential": true,
"cpu": 10,
"memoryReservation": 1000,
"portMappings": [
{
"containerPort": 80,
"hostPort": 80
}
],
"environment" : [
{ "name" : "APP_SERVER_NAME", "value" : "%s" }
],
"links": [
"app"
],
"volumesFrom": [
{ "sourceContainer": "app" }
]
},
{
"name": "app",
"image": "IMAGE",
"essential": true,
"cpu": 10,
"memoryReservation": 1000,
"portMappings": [
{
"containerPort": 9000,
"hostPort": 9000
}
]
}
]'
And then I added VOLUME ["/var/www/html"] to my app Dockerfile. Now nginx can access the data with the volumes_from argument in the task definition.