Added Percona container as an alternative to mysql mariadb

percona/Dockerfile

@@ -0,0 +1,11 @@
+FROM percona:5.7
+
+MAINTAINER DTUNES <diegotdai@gmai.com>
+
+RUN chown -R mysql:root /var/lib/mysql/
+
+ADD my.cnf /etc/mysql/conf.d/my.cnf
+
+CMD ["mysqld"]
+
+EXPOSE 3306