feat: docker-compose command-line completion

Added:

- docker-compose comman-line completion installation.

Updated:

- docker-compose updated from 1.26.0 to 1.29.2.

README.md

@@ -28,7 +28,7 @@ You can control whether the package is installed, uninstalled, or at the latest
 Variables to control the state of the `docker` service, and whether it should start on boot. If you're installing Docker inside a Docker container without systemd or sysvinit, you should set these to `stopped` and set the enabled variable to `no`.
 
     docker_install_compose: true
-    docker_compose_version: "1.26.0"
+    docker_compose_version: "1.29.2"
     docker_compose_path: /usr/local/bin/docker-compose
 
 Docker Compose installation options.

defaults/main.yml

@@ -11,9 +11,11 @@ docker_restart_handler_state: restarted
 
 # Docker Compose options.
 docker_install_compose: true
-docker_compose_version: "1.26.0"
+docker_compose_version: "1.29.2"
 docker_compose_url: https://github.com/docker/compose/releases/download/{{ docker_compose_version }}/docker-compose-Linux-x86_64
 docker_compose_path: /usr/local/bin/docker-compose
+docker_compose_completion_url: https://raw.githubusercontent.com/docker/compose/{{ docker_compose_version }}/contrib/completion/bash/docker-compose
+docker_compose_completion_path: /etc/bash_completion.d/docker-compose
 
 # Docker repo URL.
 docker_repo_url: https://download.docker.com/linux

tasks/docker-compose.yml

@@ -5,10 +5,13 @@
   changed_when: false
   failed_when: false
 
-- name: Delete existing docker-compose version if it's different.
+- name: Delete existing docker-compose version with its command-line completion if it's different.
   file:
-    path: "{{ docker_compose_path }}"
+    path: "{{ item }}"
     state: absent
+  loop:
+    - "{{ docker_compose_path }}"
+    - "{{ docker_compose_completion_path }}"
   when: >
     docker_compose_current_version.stdout is defined
     and docker_compose_version not in docker_compose_current_version.stdout
@@ -21,3 +24,12 @@
   when: >
     docker_compose_current_version.stdout is not defined
     or docker_compose_version not in docker_compose_current_version.stdout
+
+- name: Install Docker Compose command-line completion (if configured)
+  get_url:
+    url: "{{ docker_compose_completion_url }}"
+    dest: "{{ docker_compose_completion_path }}"
+    mode: 0644
+  when: >
+    docker_compose_current_version.stdout is not defined
+    or docker_compose_version not in docker_compose_current_version.stdout