add better generate

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>

vendor/github.com/docker/cli/scripts/validate/check-git-diff

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+set -eu
+
+DIFF_PATH=$1
+DIFF=$(git status --porcelain -- "$DIFF_PATH")
+
+if [ "$DIFF" ]; then
+    echo
+    echo "These files were changed:"
+    echo
+    echo "$DIFF"
+    echo
+    exit 1
+else
+    echo "$DIFF_PATH is correct"
+fi;

vendor/github.com/docker/cli/scripts/validate/shellcheck

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -eo pipefail
+
+shellcheck contrib/completion/bash/docker
+find scripts/ -type f | grep -v scripts/winresources | grep -v '.*.ps1' | xargs shellcheck