---
- name: Check if i386 foreign architecture is enabled in dpkg.
  shell: dpkg --print-foreign-architectures | grep i386
  register: dpkg_i386_is_enabled
  changed_when: dpkg_i386_is_enabled.rc == 1
  failed_when: dpkg_i386_is_enabled.rc > 1

- name: Add i386 foreign architecture to dpkg.
  command: dpkg --add-architecture i386
  when: dpkg_i386_is_enabled.rc == 1

- name: Update apt cache.
  apt: update_cache=yes
  when: dpkg_i386_is_enabled.rc == 1