add version command and always display it in help - Issue #25

Author: gondor

Makefile

@@ -1,4 +1,4 @@
-VERSION = 0.14
+VERSION = 0.15
 GO_FMT = gofmt -s -w -l .
 GO_XC = goxc -os="linux" -tasks-="rmbin" 
 

README.md

@@ -36,8 +36,8 @@ The method below will install the sysvinit and /etc/default options that can be
 1. Install the Package
 
 ```
-  $ wget https://github.com/gondor/docker-volume-netshare/releases/download/v0.14/docker-volume-netshare_0.14_amd64.deb
-  $ sudo dpkg -i docker-volume-netshare_0.14_amd64.deb
+  $ wget https://github.com/gondor/docker-volume-netshare/releases/download/v0.15/docker-volume-netshare_0.15_amd64.deb
+  $ sudo dpkg -i docker-volume-netshare_0.15_amd64.deb
 ```
 
 2. Modify the startup options in `/etc/default/docker-volume-netshare`

main.go

@@ -4,6 +4,11 @@ import (
 	"github.com/gondor/docker-volume-netshare/netshare"
 )
 
+var VERSION string = ""
+var BUILD_DATE string = ""
+
 func main() {
+	netshare.Version = VERSION
+	netshare.BuildDate = BUILD_DATE
 	netshare.Execute()
 }

netshare/netshare.go

@@ -39,6 +39,8 @@ const (
 
 Provides docker volume support for NFS v3 and 4, EFS as well as CIFS.  This plugin can be run multiple times to
 support different mount types.
+
+== Version: %s - Built: %s ==
 	`
 )
 
@@ -67,12 +69,23 @@ var (
 		Short: "run plugin in AWS EFS mode",
 		Run:   execEFS,
 	}
+
+	versionCmd = &cobra.Command{
+		Use:   "version",
+		Short: "Display current version and build date",
+		Run:  func(cmd *cobra.Command, args []string) {
+			fmt.Printf("\nVersion: %s - Built: %s\n\n", Version, BuildDate)
+		},
+	}
 	baseDir = ""
+	Version   string = ""
+	BuildDate string = ""
 )
 
 func Execute() {
 	setupFlags()
-	rootCmd.AddCommand(cifsCmd, nfsCmd, efsCmd)
+	rootCmd.Long = fmt.Sprintf(NetshareHelp, Version, BuildDate)
+	rootCmd.AddCommand(versionCmd, cifsCmd, nfsCmd, efsCmd)
 	rootCmd.Execute()
 }