[ticket/17086] Add devcontainer configuration for Codespaces

PHPBB3-17086

.devcontainer/Dockerfile

@@ -0,0 +1,20 @@
+# Debian version
+ARG VARIANT="buster"
+FROM mcr.microsoft.com/vscode/devcontainers/base:0-${VARIANT}
+
+# Install PHP
+RUN apt-get -y update
+RUN apt-get -y install php php-xml php-mbstring php-curl php-zip php-xdebug
+
+# Install Composer
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+
+# Install MySQL
+RUN apt-get -y install mysql-server php-mysql
+
+# Xdebug
+ADD resources/xdebug.ini /etc/php/8.1/apache2/conf.d/xdebug.ini
+
+# Configure Apache
+RUN echo "Listen 8080" >> /etc/apache2/ports.conf && \
+    a2enmod rewrite