Extra validation on Linux Jails, revert cp.sh to avoid issues with templates

usr/local/share/bastille/cp.sh

@@ -66,7 +66,7 @@ esac
 for _jail in ${JAILS}; do
     info "[${_jail}]:"
     bastille_jail_path="${bastille_jailsdir}/${_jail}/root"
-    cp "${OPTION}" "${CPSOURCE}" "${bastille_jail_path}${CPDEST}"
+    cp "${OPTION}" "${CPSOURCE}" "${bastille_jail_path}/${CPDEST}"
     RETURN="$?"
     if [ "${TARGET}" = "ALL" ]; then
         # Display the return status for reference

usr/local/share/bastille/create.sh

@@ -113,6 +113,13 @@ validate_netconf() {
 }
 
 validate_release() {
+    ## ensure the user set the Linux(experimental) option explicitly
+    if [ -n "${UBUNTU}" ]; then
+        if [ -z "${LINUX_JAIL}" ]; then
+            usage
+        fi
+    fi
+
     ## check release name match, else show usage
     if [ -n "${NAME_VERIFY}" ]; then
         RELEASE="${NAME_VERIFY}"
@@ -644,10 +651,12 @@ if [ -z "${EMPTY_JAIL}" ]; then
         validate_release
         ;;
     ubuntu_bionic|bionic|ubuntu-bionic)
+        UBUNTU="1"
         NAME_VERIFY=Ubuntu_1804
         validate_release
         ;;
     ubuntu_focal|focal|ubuntu-focal)
+        UBUNTU="1"
         NAME_VERIFY=Ubuntu_2004
         validate_release
         ;;