Update bootstrap.sh

playbook-template/bootstrap.sh

@@ -8,7 +8,8 @@ echo ansible > requirements.python.txt
 if ! command -v virtualenv &>/dev/null; then
   echo "This command needs virtualenv to run."
   echo "Install it like this:"
-  printf "\tpip3 install --user virtualenv\n"
+  printf "\tapt install python3-pip\n"
+  printf "\tOR pip3 install --user virtualenv\n"
   printf "\texport PATH=\"~/.local/bin:\$PATH\"\n"
   exit 1
 fi