Update Dockerfile

Dockerfile

@@ -7,14 +7,19 @@ ENV MYSQL_DATABASE=moodle
 ENV MYSQL_USER=moodleuser
 ENV MYSQL_PASSWORD=moodlepassword
 
-# Ensure the data directory is owned by the mysql user and group
-RUN chown -R mysql:mysql /var/lib/mysql
+# Create a dedicated directory for MariaDB with appropriate permissions
+RUN mkdir -p /var/lib/mysql /var/run/mysqld && \
+    chown -R mysql:mysql /var/lib/mysql /var/run/mysqld
+
+# Initialize the MariaDB system tables as the mysql user
+USER mysql
+RUN mysql_install_db --user=mysql --basedir=/usr --datadir=/var/lib/mysql --defaults-file=/etc/mysql/my.cnf
+
+# Switch back to the root user to expose the port and start the service
+USER root
 
 # Expose port 3306 for MariaDB
 EXPOSE 3306
 
-# Add a healthcheck to ensure the database is ready
-HEALTHCHECK --interval=10s --timeout=5s --start-period=30s --retries=3 CMD mariadb-admin ping -u root -p$MYSQL_ROOT_PASSWORD || exit 1
-
 # Start the MariaDB server
 CMD ["mysqld"]