add central place for configuration

config

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+export MYSQL_IMAGE=${MYSQL_IMAGE:="mysql"}
+export MYSQL_IMAGE_VERSION=${MYSQL_IMAGE_VERSION:="5.7"}
+export MYSQL_ROOT=/var/lib/dokku/services/mysql
+
+export PLUGIN_COMMAND_PREFIX="mysql"
+export PLUGIN_DATA_ROOT=$MYSQL_ROOT
+export PLUGIN_DATASTORE_PORT=3306
+export PLUGIN_DEFAULT_ALIAS="DATABASE"
+export PLUGIN_IMAGE=$MYSQL_IMAGE
+export PLUGIN_IMAGE_VERSION=$MYSQL_IMAGE_VERSION
+export PLUGIN_SCHEME="mysql"
+export PLUGIN_SERVICE="MySQL"