Added curl for docker grafana

grafana/add_datasources.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 #set -e
 
+apk add curl
+
 # ADD INFLUXDB DATASOURCE
 curl -s -H "Content-Type: application/json" \
     -XPOST http://admin:nimda321@localhost:3000/api/datasources \
@@ -9,7 +11,7 @@ curl -s -H "Content-Type: application/json" \
     "name": "influxdb",
     "type": "influxdb",
     "access": "proxy",
-    "url": "http://influxdb:8086",
+    "url": "http://influxdb2:8086",
     "database": "telegraf",
     "user":"telegraf",
     "password":"nimda321",