deploy alpine with bash

recipes/os-environments/alpine/Singularity.alpine-3160

@@ -5,13 +5,9 @@ From: alpine:3.16.0
 
     This singularity installs alpine with a minimal setup for scripting. Tools can be added on demand.
 
-%runscript
-    echo "Running container alpine:3.16.0"
-    exec /bin/bash "$@"
-
 %post
     # ~~~~~~ General setup ~~~~~~ #
-    apk update && apk add wget gzip
+    apk update && apk add wget gzip bash tcl
 
 %environment
     export PATH="${PATH}:/bin/sh"