Add bashInteractive in nix-portable bwrap

pkgs/nix-portable/default.nix

@@ -14,6 +14,7 @@ with builtins;
     "gitMinimal"
     "netcat-openbsd"
     "openssh"
+    "bashInteractive"
   ],
 
   busybox,
@@ -260,7 +261,9 @@ let
       recreate_nix_conf
     fi
 
-
+    # Override $SHELL with nix bashInteractive
+    export SHELL="${pkgs.bashInteractive.out}/bin/bash"
+    export PS1="\n\[\033[1;32m\][\[\e]0;\u@\h: \w\a\]\u@\h:\w]\$\[\033[0m\] "
 
     ### setup SSL
     # find ssl certs or use from nixpkgs