add docker-cli and set correct column lengh in terminal

Dockerfile

@@ -11,7 +11,7 @@ ENV TZ=""
 
 RUN apk add --no-cache \
   bash sudo openssh-server shadow tzdata curl git dcron coreutils grep sed gawk util-linux ca-certificates tmux fastfetch prometheus-node-exporter \
-  borgbackup \
+  borgbackup docker-cli \
 && mkdir -p \
   /.ssh \
   /backups \

entrypoint-script/variables.sh

@@ -10,7 +10,8 @@ function sepurator {
   if [ -n "${2:-}" ]; then
     local end="$2"
   else
-    local end="$COLUMNS"
+    local end
+    end=$(tput cols 2>/dev/null || echo "${COLUMNS:-80}")
   fi
 
   local start=1