John Davidson

Message:

I have the following docker-compose file:

version: "3.1"

services:

    www:

        build:

            context: .

            dockerfile: Dockerfile.lamp

        ports: 

            - "${WEBSERVER_PORT}:80"

        volumes:

            - ./www:/var/www/html/

As you can see, the www folder in the same folder as the docker-compose.yml file is where the web code is hosted.

I have the following dockerfile (Dockerfile.lamp):

FROM php:8.1-apache

RUN a2enmod rewrite 

RUN docker-php-ext-install pdo pdo_mysql    



# Install system dependencies

RUN apt-get update && apt-get install -y \

      git \

      libicu-dev \

      zlib1g-dev \

      g++\

      libpq-dev \

      libmcrypt-dev \

      git \

      zip \

      unzip



# Install PHP extensions

RUN docker-php-ext-install pdo_mysql

RUN docker-php-ext-install mysqli

RUN docker-php-ext-configure intl \

    && docker-php-ext-install intl

All of it works, but one issue arose that in the www/index.php file I wrote

mkdir("testFolder", 0775, true);

giving me:

Warning: mkdir(): Permission denied in /var/www/html/index.php on line 1

Neither does mkdir("testFolder"); work

I tried adding the following line to the Docker.lamp file, without success:

RUN chown -R www-data:www-data /var/www

What can I Do?
I already checked:

• Permission Denied for mkdir() php in Docker


• Cannot create directory. Permission denied inside docker container

---

My Answer:
Docker-compose is a tool that allows you to define and run multi-container Docker applications. It uses a YAML file to configure the services, networks, and volumes needed for your application to run. With docker-compose, you can easily manage and orchestrate multiple Docker containers as a single application, making it easier to deploy and scale your applications.