'util-linux' pkg added to display the column

Dockerfile

@@ -2,10 +2,9 @@ FROM alpine
 
 RUN apk -U upgrade
 
-RUN apk --no-cache add curl jq w3m
-
+RUN apk --no-cache add curl jq w3m \
+    util-linux # for "columns" binary
 
 RUN curl -L "https://git.io/tmpmail" > tmpmail && chmod +x tmpmail
 
-
 RUN mv tmpmail /bin/