Ttdfjt

I'm using docker-compose to build a Magento 2.3.1 development environment (Docker for Windows with Linux containers enabled).

The stack is based on PHP:7.2-apache with all Magento required extensions and MySQL 5.7.

The readiness test is successful, the database connection is okay, however, I get a fatal error when the installation starts :

Fatal error: Uncaught RuntimeException: The path
"/var/www/html/generated/code/Magento/Framework/App/Config/InitialConfigSource/Proxy.php.20"
cannot be renamed into
"/var/www/html/generated/code/Magento/Framework/App/Config/InitialConfigSource/Proxy.php"
Warning!rename(/var/www/html/generated/code/Magento/Framework/App/Config/InitialConfigSource/Proxy.php.20,/var/www/html/generated/code/Magento/Framework/App/Config/InitialConfigSource/Proxy.php):
No such file or directory Class
MagentoFrameworkAppConfigInitialConfigSourceProxy generation
error: The requested class did not generate properly, because the
'generated' directory permission is read-only. If --- after running
the 'bin/magento setup:di:compile' CLI command when the 'generated'
directory permission is set to write --- the requested class did not
generate properly, then you must add the generated class object to the
signature of the related construct method, only. in
/var/www/html/vendor/magento/framework/Code/Generator.php:135 Stack
trace: #0 /var/www/html/ve in
/var/www/html/vendor/magento/framework/Code/Generator.php on line 135

It's obvious that it's a file permission issue, but I'm not sure how and where I can fix this, so any help will be highly appreciated !

My webserver in docker-compose :

version: "3"

services:
 webserver:
 build: 
 context: ./bin/webserver
 container_name: '7.2.x-webserver'
 volumes: 
 - $DOCUMENT_ROOT-./www:/var/www/html
 - $PHP_INI-./config/php/php.ini:/usr/local/etc/php/php.ini
 - $VHOSTS_DIR-./config/vhosts:/etc/apache2/sites-enabled
 - $LOG_DIR-./logs/apache2:/var/log/apache2
...

My webserver Dockerfile :

FROM php:7.2-apache

RUN apt-get -y update --fix-missing
RUN apt-get upgrade -y

# Install tools & libraries
RUN apt-get -y install apt-utils nano wget dialog 
 build-essential git curl libcurl3 libcurl3-dev zip

# Install important libraries
RUN apt-get -y install --fix-missing apt-utils build-essential git curl libcurl3 libcurl3-dev zip 
 libmcrypt-dev libsqlite3-dev libsqlite3-0 mysql-client zlib1g-dev 
 libicu-dev libfreetype6-dev libjpeg62-turbo-dev libpng-dev 
 libxslt-dev

# Composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

# PHP Extensions
RUN pecl install xdebug 
 && docker-php-ext-enable xdebug 
 && pecl install mcrypt-1.0.2 
 && docker-php-ext-enable mcrypt 
 && docker-php-ext-install pdo_mysql 
 && docker-php-ext-install pdo_sqlite 
 && docker-php-ext-install mysqli 
 && docker-php-ext-install curl 
 && docker-php-ext-install tokenizer 
 && docker-php-ext-install json 
 && docker-php-ext-install zip 
 && docker-php-ext-install -j$(nproc) intl 
 && docker-php-ext-install mbstring 
 && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ 
 && docker-php-ext-install -j$(nproc) gd 
 && pecl install redis 
 && docker-php-ext-enable redis 
 && docker-php-ext-install bcmath 
 && docker-php-ext-install xsl 
 && docker-php-ext-install soap

# Enable apache modules
RUN a2enmod rewrite headers

# Fix Files Permissions
RUN chown -R www-data:www-data /var/www/
RUN chmod -R 775 /var/www/

ENTRYPOINT ["/usr/sbin/apache2ctl", "-D", "FOREGROUND"]