Merge pull request #32 from SensorsIot/docker-version-check

Docker version check

Author: Slyke

README.md

@@ -9,7 +9,7 @@ https://sensorsiot.github.io/IOTstack/
 https://youtu.be/a6mjt8tWUws
 
 ## Installation
-1. On the (PRi) lite image you will need to install git first
+1. On the (RPi) lite image you will need to install git first
 
 ```
 sudo apt-get install git -y

menu.sh

@@ -180,6 +180,25 @@ else
 	fi
 fi
 
+#---------------------------------------------------------------------------------------------------
+# Docker updates
+echo "checking docker version"
+SERVER_VERSION=$(docker version -f "{{.Server.Version}}")
+SERVER_VERSION_MAJOR=$(echo "$SERVER_VERSION"| cut -d'.' -f 1)
+SERVER_VERSION_MINOR=$(echo "$SERVER_VERSION"| cut -d'.' -f 2)
+SERVER_VERSION_BUILD=$(echo "$SERVER_VERSION"| cut -d'.' -f 3)
+
+if [ "${SERVER_VERSION_MAJOR}" -ge 18 ] && \
+	[ "${SERVER_VERSION_MINOR}" -ge 2 ]  && \
+	[ "${SERVER_VERSION_BUILD}" -ge 0 ]; then
+	echo "Docker version >= 18.2.0. You are good to go."
+else
+	echo ""
+	echo "Docker version less than 18.02.0 consider upgrading or you may experience issues"
+	echo "Upgrade by typing: 'sudo apt upgrade docker docker-compose'"
+	sleep 2
+fi
+
 #---------------------------------------------------------------------------------------------------
 # Menu system starts here
 # Display main menu