fix mysql custom config

Dockerfile

@@ -1,8 +1,9 @@
 FROM mariadb:10
 
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -q -y cron sudo automysqlbackup
-RUN touch /etc/mysql/mariadb.conf.d/settings.cnf && chown mysql /etc/mysql/mariadb.conf.d/settings.cnf
 
+COPY mysql.cnf /etc/mysql/mariadb.conf.d/settings.cnf
+RUN chown mysql /etc/mysql/mariadb.conf.d/settings.cnf
 COPY docker-entrypoint.sh /usr/local/bin/
 COPY automysqlbackup /etc/default
 COPY sudoers /etc/sudoers.d/mysudoers

docker-entrypoint.sh

@@ -327,15 +327,11 @@ _main() {
 
 # If we are sourced from elsewhere, don't perform any further actions
 if ! _is_sourced; then
-	SERVER_ID=${SERVERID:-33}
+	SERVER_ID=${SERVER_ID:-33}
 	READONLY=${READONLY:-1}
 
-	cat >/etc/mysql/mariadb.conf.d/settings.cnf <<EOF
-[mysqld]
+	cat >>/etc/mysql/mariadb.conf.d/settings.cnf <<EOF
 server_id = ${SERVER_ID}
-log_bin
-log-bin = binlog
-max-binlog-size = 500M
 replicate-do-db=${REPLICATE_DO_DB}
 EOF
 	if [ "$READONLY" = "1" ] ; then

mysql.cnf

@@ -0,0 +1,5 @@
+[mysqld]
+log_bin
+log-bin = binlog
+max-binlog-size = 500M
+