#285 Fix config file name

.cfg wasn't being picked up by ProxySQL. What led me into believing it
was .cfg was that the config file in the root of the repo is named like
that.

docker/1backend/proxysql/Dockerfile

@@ -14,7 +14,7 @@ RUN apt-get update && apt-get install -y\
 RUN cd /opt; git clone https://github.com/sysown/proxysql-0.2.git proxysql
 RUN cd /opt/proxysql; make clean && make
 RUN mkdir -p /var/run/proxysql
-ADD ./proxysql.cfg /etc/
+ADD ./proxysql.cnf /etc/
 
 WORKDIR /opt/proxysql/src
 CMD ["/opt/proxysql/src/proxysql", "--initial"]

docker/1backend/proxysql/proxysql.cnf

@@ -3,7 +3,7 @@ datadir="/tmp"
 admin_variables =
 {
 	admin_credentials="admin:admin"
-	mysql_ifaces="127.0.0.1:6032"
+	mysql_ifaces="0.0.0.0:6032"
 	refresh_interval=2000
 	debug=true
 }