Вопрос как получить Bootstap компоненты в папку scss/bootstrap

gistfile.js

let gulp = require('gulp');

let changed = require('gulp-changed'),
    del = require('del'),
    npmDist = require('gulp-npm-dist'),
    sourcemaps = require('gulp-sourcemaps'),
    sass = require('gulp-sass'),
    autoprefixer = require('gulp-autoprefixer'),
    rename = require('gulp-rename'),
    cleanCSS = require('gulp-clean-css'),
    path = require('path');

let srcMarkupFiles = 'pages/*.html'
let srcSassFiles = 'scss/style.default.scss'

let distMainDir = 'dist/'
let distPageDir = 'dist/'
let distStyleDir = 'dist/css/'

let distVendorDir = 'dist/vendor/'

let copy = ['js/**', 'img/**', 'fonts/**', 'css/photoswipe/*', 'css/custom.css', 'favicon.png', 'icons/**', 'docs/**']

var config = {
    autoprefixer: {
        cascade: false
    },
    sass: {
        outputStyle: 'expanded',
        includePaths: ['src/scss']
    }
}

// Clean the dist folder - for clean builds
gulp.task('clean', function () {
    return del([
        distMainDir + '**/*'
    ]);
});

// Copy changed HTML
gulp.task('html', function () {
    return gulp.src(srcMarkupFiles)
        // only pass changed files
        .pipe(changed(distMainDir))
        //save all the files
        .pipe(gulp.dest(distMainDir));

});

// Dev SASS Task - no sourcemaps, no autoprefixing, no minification
gulp.task('sass-dev', function () {
    return gulp.src(srcSassFiles)
        .pipe(sass(config.sass).on('error', sass.logError))
        .pipe(autoprefixer(config.autoprefixer))
        .pipe(gulp.dest(distStyleDir));
});


// Build SASS Task - sourcemaps, minification
gulp.task('sass-build', function () {
    return gulp.src(srcSassFiles)
        .pipe(sourcemaps.init())
        .pipe(sass(config.sass).on('error', sass.logError))
        .pipe(autoprefixer(config.autoprefixer))
        .pipe(gulp.dest(distStyleDir))
        .pipe(cleanCSS())
        .pipe(rename({
            suffix: '.min'
        }))
        .pipe(sourcemaps.write('.'))
        .pipe(gulp.dest(distStyleDir));
});

// Copy folders defined in copy array
gulp.task('copy', function () {
    return getFoldersSrc('pages', copy)
        .pipe(changed(distMainDir))
        .pipe(gulp.dest(distPageDir));

});


// Copy 3rd party modules to the vendor directory based on our package.json dependencies
// If running in dev mode w/ Browser Sync, there is no watcher set for this, it executes
// only when calling initial `gulp` command or you run `gulp vendor` separately
gulp.task('vendor', function () {
    return gulp.src(npmDist({
        copyUnminified: true
    }), {
        base: './node_modules/'
    })
        .pipe(rename(function (path) {
            path.dirname = path.dirname.replace(/\/distribute/, '').replace(/\\distribute/, '').replace(/\/dist/, '').replace(/\\dist/, '');
        }))
        .pipe(gulp.dest(distVendorDir));
});


// Build Gulp Task
// 1. Clean dist folder
// 2. Process HTML, vendor dir, SCSS w/ source maps and minification and copy static assets
gulp.task('build',
    gulp.series(
        'clean',
        gulp.parallel('vendor', 'html', 'sass-build', 'copy')));


function getFolders(base, folders) {
    return folders.map(function (item) {
        return path.join(base, item);
    });
};

function getFoldersSrc(base, folders) {
    return gulp.src(folders.map(function (item) {
        return path.join(base, item);
    }), {
        base: base,
        allowEmpty: true
    });
};