diff --git a/Dockerfile b/Dockerfile
index 25c0b3c..b09705d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,21 +17,21 @@ WORKDIR /app
 HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 CMD [ "/app/healthcheck.sh" ]
 
 # you should override these default values when running. See README.md
-ENV IDRAC_HOST 192.168.0.120
+ENV IDRAC_HOST=192.168.0.120
 # ENV IDRAC_HOST local
-ENV IDRAC_USERNAME root
-ENV IDRAC_PASSWORD calvin
-ENV FAN_SPEED 5
-ENV CPU_TEMPERATURE_THRESHOLD 70
-ENV CHECK_INTERVAL 60
-ENV DISABLE_THIRD_PARTY_PCIE_CARD_DELL_DEFAULT_COOLING_RESPONSE false
-ENV FAN_SPEED_1 10
-ENV FAN_SPEED_2 30
-ENV FAN_SPEED_3 60
-ENV FAN_SPEED_4 80
-ENV CPU_TEMPERATURE_1 30
-ENV CPU_TEMPERATURE_2 40
-ENV CPU_TEMPERATURE_3 50
-ENV CPU_TEMPERATURE_4 60
+ENV IDRAC_USERNAME=root
+ENV IDRAC_PASSWORD=calvin
+ENV FAN_SPEED=5
+ENV CPU_TEMPERATURE_THRESHOLD=70
+ENV CHECK_INTERVAL=60
+ENV DISABLE_THIRD_PARTY_PCIE_CARD_DELL_DEFAULT_COOLING_RESPONSE=false
+ENV FAN_SPEED_1=10
+ENV FAN_SPEED_2=30
+ENV FAN_SPEED_3=60
+ENV FAN_SPEED_4=80
+ENV CPU_TEMPERATURE_1=30
+ENV CPU_TEMPERATURE_2=40
+ENV CPU_TEMPERATURE_3=50
+ENV CPU_TEMPERATURE_4=60
 
 CMD ["./Dell_iDRAC_fan_controller.sh"]