miqt: fixes for string parsing of blank links in docker output

main.go

@@ -506,6 +506,10 @@ func (self *DockerGUI) refresh_containers() {
 	containers := strings.Split(strings.TrimSpace(string(output)), "\n")
 	for _, container := range containers {
 		parts := strings.Split(container, "\t")
+		if len(parts) == 1 {
+			continue
+		}
+
 		id := parts[0]
 		name := parts[1]
 		image := parts[2]
@@ -540,6 +544,10 @@ func (self *DockerGUI) refresh_images() {
 	images := strings.Split(strings.TrimSpace(string(output)), "\n")
 	for _, image := range images {
 		parts := strings.Split(image, "\t")
+		if len(parts) == 1 {
+			continue
+		}
+
 		id := parts[0]
 		repository := parts[1]
 		tag := parts[2]
@@ -568,6 +576,10 @@ func (self *DockerGUI) refresh_networks() {
 	networks := strings.Split(strings.TrimSpace(string(output)), "\n")
 	for _, network := range networks {
 		parts := strings.Split(network, "\t")
+		if len(parts) == 1 {
+			continue
+		}
+
 		id := parts[0]
 		name := parts[1]
 		driver := parts[2]
@@ -594,6 +606,10 @@ func (self *DockerGUI) refresh_volumes() {
 	volumes := strings.Split(strings.TrimSpace(string(output)), "\n")
 	for _, volume := range volumes {
 		parts := strings.Split(volume, "\t")
+		if len(parts) == 1 {
+			continue
+		}
+
 		name := parts[0]
 		driver := parts[1]
 		mountpoint := parts[2]