use env variable

cpu_influx.py

 import time
+import os
 import psutil
 from influxdb import InfluxDBClient
 
-influx_client = InfluxDBClient('influxdb', 8086, database='cpu-sense')
+influx_host = os.getenv('INFLUX_HOST', 'localhost')
+influx_client = InfluxDBClient(host=influx_host, database='cpu-sense')
 influx_client.create_database('cpu-sense')
 
 while True:
@@ -15,4 +17,4 @@ while True:
         }
     ]
     influx_client.write_points(measurement)
-    time.sleep(10)
\ No newline at end of file
+    time.sleep(1)
\ No newline at end of file

docker-compose.yml

@@ -3,12 +3,8 @@ volumes:
   persitent-storage:
 services:
   influxdb:
-    image: influxdb:1.7
+    image: influxdb:1.7-alpine
     restart: always
-    ports:
-      - "8086:8086"
-    volumes:
-      - 'persitent-storage:/var/lib/influxdb'
   grafana:
     image: grafana/grafana:5.4.3
     restart: always
@@ -19,8 +15,6 @@ services:
   sensor:
     build: .
     restart: always
-    links:
-      - influxdb
     environment:
       - INFLUX_HOST=influxdb
     depends_on: