generator-gulp-angular - multiple apps

From my understanding:

You want a gulp task which will run both build tasks and copy one build folder to inner-directory of other build folder.

So if buildApp1 and buildApp2 are the build tasks for app1 and app2 respectively, like this:

gulp.task('buildApp1', ['html1', 'fonts1', 'other1']);
gulp.task('buildApp2', ['html2', 'fonts2', 'other2']);
// renamed default build tasks from generator (ref: gulp/build.js)

These tasks will create the dist/ folder in each app directory (you may want to rename the folders, like to distApp1/ and distApp2/ in gulp conf.js for simplicity).

Then we combine these tasks in default build:

gulp.task('build', ['buildApp1', 'buildApp2', 'copy']); 
//notice the copy task at the end

Note that we already had two build task we renamed it to buildApp1 and buildApp2

And here is the copy task which should be written in build.js file

// The task for copying buildApp1 to innerdirectory of buildApp2 folder
gulp.task('copy', function(){
  return gulp.src(['distApp1/**/*'], {base:"."})
  .pipe(gulp.dest(' /innerfolder'));
});
// distApp1 and distApp2 are the generated folders.

This is just the overview. Still you have to create both build tasks yourself from existing files, Which you can do easily mostly by renaming and tweaking.