php-fpm + nginx - nginx web server cannot access file generated by php-fpm

[MarkBFamFour]

Hi,

I have the following setup:

docker-compose.yml

version: '3.1'
services:
    webserver:
        image: 'nginx:alpine'
        working_dir: /application
        volumes:
            - '/var/www/php/MyApp:/application'
            - './phpdocker/nginx/nginx.conf:/etc/nginx/conf.d/default.conf'
            - '/var/stuff/ExternalFiles:/var/stuff/ExternalFiles'
        ports:
            - '8205:8205'
        environment:
            APP_ENV: "production"

    php-fpm:
        build: phpdocker/php-fpm
        working_dir: /application
        volumes:
            - '/var/www/php/MyApp:/application'
            - './phpdocker/php-fpm/php-ini-overrides.ini:/etc/php/7.4/fpm/conf.d/99-overrides.ini'
            - '/var/stuff/ExternalFiles:/var/stuff/ExternalFiles'

phpdocker/nginx/nginx.conf

server {
    listen 8080 default;

    client_max_body_size 40M;

    access_log /var/log/nginx/access.log;

    root /application/public_html/;
    index index.php;

    # try to serve file directly, fallback to index.php
    location / {
        try_files $uri /index.php$is_args$args;
    }

    if (!-e $request_filename) {
        rewrite ^.*$ /index.php last;
    }

    location ~ \.php$ {
        fastcgi_pass legacy-php-fpm:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PHP_VALUE "error_log=/var/log/php_errors.log";
        fastcgi_buffers 16 16k;
        fastcgi_buffer_size 32k;
        include fastcgi_params;
    }
}

One of my app's scripts generates a CSV file and deposits it in /application/public_html/attachments. This is all done by the php-fpm container, as it's a PHP process that pulls data from a database and collates it into a CSV. The prioblem is when I want to download the CSV file, the link is processed by the nginx server in the webserver container and it can't access it, it gives me a 404 and the log shows Permission Denied for access to /application/public_html/attachments/myfile.csv.

How do I get permissions parity between the two containers to allow one to access files from the other?

[luispabon]

Sorry Mark but this is not a support forum for general docker questions, but for issues with the docker-compose generator and the site itself. You obviously need to store your files in a volume that's accessible to both containers and created with the correct permissions for nginx to be able to access it.