Added mysql backup script

Dockerfile

@@ -1,6 +1,6 @@
 from debian
 
-RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y wget lftp
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y wget lftp mariadb-client
 
 RUN TF=`mktemp` &&\
 	wget "https://hndl.urbackup.org/Client/latest/update/UrBackupUpdateLinux.sh" -O $TF &&\ 

scripts/mysql_backup.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+BACKUP_DIR="/backup/database"
+
+echo
+echo "Starting to backup database"
+date
+mkdir --parents $BACKUP_DIR
+mysqldump --single-transaction --host=$MYSQL_BACKUP_HOST --user=$MYSQL_BACKUP_USER --password=$MYSQL_BACKUP_PASSWORD $MYSQL_BACKUP_DATABASE > $BACKUP_DIR/$MYSQL_BACKUP_DATABASE.sqldump
+
+echo
+echo "Database backup finished"
+date

scripts/prefilebackup

@@ -4,3 +4,6 @@ if [[ -z "$DO_FTP_BACKUP" ]]; then
 	sh ftp_backup.sh
 fi
 
+if [[ -z "$DO_MYSQL_BACUP" ]]; then
+	sh mysql_backup.sh
+fi