Update docker.sh

ct/docker.sh

@@ -39,11 +39,8 @@ option_picked(){
     printf " ${YW}${message1}${CL}\n"
 }
 show_menu
-while [ $opt != '' ]
+while [ "$opt" != " " ]
     do
-    if [ $opt = '' ]; then
-      exit;
-    else
       case $opt in
         1) clear;
             header_info;
@@ -67,7 +64,6 @@ while [ $opt != '' ]
             show_menu;
         ;;
       esac
-    fi
   done
 show_menu2(){
     printf "    ${YW} 1)${GN} Use Automatic Login ${CL}\n"
@@ -83,11 +79,8 @@ option_picked(){
     printf " ${YW}${message2}${CL}\n"
 }
 show_menu2
-while [ $opt != '' ]
+while [ "$opt" != " " ]
     do
-    if [ $opt = '' ]; then
-      exit;
-    else
       case $opt in
         1) clear;
             header_info;
@@ -111,7 +104,6 @@ while [ $opt != '' ]
             show_menu2;
         ;;
       esac
-    fi
   done
 show_menu3(){
     printf "    ${RD} If Using ZFS, You Have Storage Driver Options${CL}\n"
@@ -130,11 +122,8 @@ option_picked(){
     printf " ${YW}${message3}${CL}\n"
 }
 show_menu3
-while [ $opt != '' ]
+while [ "$opt" != " " ]
     do
-    if [ $opt = '' ]; then
-      exit;
-    else
       case $opt in
         1) clear;
             header_info;
@@ -158,7 +147,6 @@ while [ $opt != '' ]
             show_menu3;
         ;;
       esac
-    fi
   done
 show_menu4(){
     printf "    ${YW} 1)${GN} Automatic DHCP ${CL}\n"
@@ -176,11 +164,8 @@ option_picked(){
     printf " ${YW}${message4}${CL}\n"
 }
 show_menu4
-while [ $opt != '' ]
+while [ "$opt" != " " ]
     do
-    if [ $opt = '' ]; then
-      exit;
-    else
       case $opt in
         1) clear;
             header_info;
@@ -204,7 +189,6 @@ while [ $opt != '' ]
             show_menu4;
         ;;
       esac
-    fi
   done
   
 set -o errexit