updates www user shell prompt with colours

www.sh

@@ -6,8 +6,8 @@ set -a
 set +a
 
 docker exec \
-  -e SHELLOPTS=vi \
   -e HISTFILE=/var/www/html/.bash_history \
+  -e SHELLOPTS=vi \
   -it --user www-data \
   "${PREFIX}-app" \
-  /bin/bash
+  /bin/bash -c '\nwww-data@${HOSTNAME} \[\033[01;35m\]\w\[\033[00m\]\n$ '