const users = [{
    email: 'admin@admin.com',
    password: 'password',
    profile: {

      name: { first: 'Carl', last: 'Winslow' },
    },

    roles: ['admin'],

  }];

  users.forEach(({ email, password, profile, roles }) => {

    const userExists = Meteor.users.findOne({ 'emails.address': email });

    if (!userExists) {

      const userId = Accounts.createUser({ email, password, profile });
      Roles.addUsersToRoles(userId, roles);

    }
  });