Gruntfile.js

module.exports = function(grunt) {
  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    uglify: {
      options: {
        banner: '/*! <%= pkg.name %> <%= grunt.template.today("dd-mm-yyyy") %> */\n',
        ...
      },
      dist: {
        files: {
          'dist/<%= pkg.name %>.min.js': ['<%= concat.dist.dest %>']
        }
      }
    },
    foo: {
      ...
    },
    bar: {
      ...
    }
  });
 
  grunt.loadNpmTasks('grunt-contrib-uglify');
  grunt.loadNpmTasks('grunt-contrib-foo');
  grunt.loadNpmTasks('grunt-contrib-bar');
};

Makefile

uglify:
  uglifyjs [input files] [options]

foo:
  ...

bar:
  ...