self-hosting/roles/matrix-docker/tasks/main.yml

---
- name: Copy matrix docker files
  copy:
    src: matrix
    dest: "{{docker_compose_files_folder}}"
- name: Create matrix-network docker network
  docker_network:
    name: matrix-network
- name: Start matrix docker project
  docker_service:
    project_src: "{{docker_compose_files_folder}}/matrix"
    state: present
- name: Check if database tables exist
  command: docker-compose exec -T db psql -U synapse synapse -c "\dt"
  args:
      chdir: "{{docker_compose_files_folder}}/matrix/"
  register: db_tables_exist
  ignore_errors: false
  changed_when: '"No relations found." in db_tables_exist.stdout_lines'
- name: Restore Matrix database
  command: docker-compose exec -T db sh -c "psql -U synapse synapse < /backups/database.dmp"
  args:
    chdir: "{{docker_compose_files_folder}}/matrix/"
  when: '"No relations found." in db_tables_exist.stdout_lines'