bashrc: exit for non-interactive

Signed-off-by: Karel Hanák <karel.hanak@iqrf.org>

recipes-core/base-files/base-files/share/dot.bashrc

 # ~/.bashrc: executed by bash(1) for non-login shells.
 
+# If not running interactively, don't do anything
+case $- in
+    *i*) ;;
+      *) return;;
+esac
+
 # check if terminal uses colors
 case "$TERM" in
     xterm-color|*-256color) color_prompt=yes;;