environment_variables: MARIADB_USER: "User to be created on first boot (default: root)." MARIADB_PASSWORD: "Password to be set for MARIADB_USER on first boot (default: none)." MARIADB_DATABASE: "Database to be created on first boot, accessible by MARIADB_USER (default: none)." volumes: $BITNAMI_APP_VOL_PREFIX/data: "Location of $BITNAMI_APP_NAME data files." $BITNAMI_APP_VOL_PREFIX/conf: "Location of my.cnf ($BITNAMI_APP_NAME config file)." $BITNAMI_APP_VOL_PREFIX/logs: "Location of mysqld.log." ports: 3306: "$BITNAMI_APP_NAME default port." misc: Options: "You can add extra options during the docker run using the -- prefix." Note: "The user and database creation happens only the first time you run the container." Note: "MARIADB_USER works in conjunction with MARIADB_DATABASE environment variable." Tip: "Back up the $BITNAMI_APP_VOL_PREFIX/data and $BITNAMI_APP_VOL_PREFIX/conf directories regularly."