fix: update portal links to relative, use php-apache, add mariadb db service, and update Gitea URL

Dockerfile

@@ -0,0 +1,22 @@
+FROM php:8.2-apache
+
+# Install PHP extensions & enable Apache modules
+RUN docker-php-ext-install mysqli pdo pdo_mysql \
+    && a2enmod rewrite headers
+
+# Allow .htaccess overrides and enable rewrite for all directories
+RUN sed -i 's|AllowOverride None|AllowOverride All|g' /etc/apache2/apache2.conf \
+    && echo "ServerName localhost" >> /etc/apache2/apache2.conf
+
+# Set working directory
+WORKDIR /var/www/html
+
+# Copy application files
+COPY . /var/www/html/
+
+# Set proper permissions for web server
+RUN chown -R www-data:www-data /var/www/html \
+    && find /var/www/html -type d -exec chmod 755 {} \; \
+    && find /var/www/html -type f -exec chmod 644 {} \;
+
+EXPOSE 80