add to Dockerfile expose 3306

Dockerfile

@@ -10,7 +10,7 @@ RUN yum -y install pwgen
 COPY sshd_config /etc/ssh/sshd_config
 COPY install_sshd.sh /install_sshd.sh
 
-EXPOSE 2323
+EXPOSE 2323 3306
 RUN systemctl enable sshd
 
 ## use as a base and then add these