Adds commit sha to development version for cobra command only

Leave dashboard unaffected

client/cmd/version.go

@@ -12,7 +12,13 @@ var (
 		Short: "Print the NetBird's client application version",
 		Run: func(cmd *cobra.Command, args []string) {
 			cmd.SetOut(cmd.OutOrStdout())
-			cmd.Println(version.NetbirdVersion())
+			out := version.NetbirdVersion()
+			if version.IsDevelopmentVersion(out) {
+				if commit := version.NetbirdCommit(); commit != "" {
+					out += "-" + commit
+				}
+			}
+			cmd.Println(out)
 		},
 	}
 )

version/version.go

@@ -2,6 +2,7 @@ package version
 
 import (
 	"regexp"
+	"runtime/debug"
 	"strings"
 
 	v "github.com/hashicorp/go-version"
@@ -27,6 +28,41 @@ func NetbirdVersion() string {
 	return version
 }
 
+// NetbirdCommit returns the VCS revision (truncated to 12 chars) of the
+// build, with a "-dirty" suffix when the working tree was modified.
+// Returns an empty string when no build info is embedded (e.g. release
+// builds compiled by goreleaser without -buildvcs).
+func NetbirdCommit() string {
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return ""
+	}
+
+	var revision string
+	var modified bool
+	for _, s := range info.Settings {
+		switch s.Key {
+		case "vcs.revision":
+			revision = s.Value
+		case "vcs.modified":
+			modified = s.Value == "true"
+		}
+	}
+
+	if revision == "" {
+		return ""
+	}
+
+	if len(revision) > 12 {
+		revision = revision[:12]
+	}
+
+	if modified {
+		revision += "-dirty"
+	}
+	return revision
+}
+
 // IsDevelopmentVersion reports whether the given version string identifies
 // a non-release / development build. It is the single source of truth for
 // "is this a dev build" checks across the codebase; use it instead of