add docker_version

README.md

@@ -16,6 +16,7 @@ Available variables are listed below, along with default values (see `defaults/m
     docker_edition: 'ce'
     docker_package: "docker-{{ docker_edition }}"
     docker_package_state: present
+    docker_version: "" # like "18.06.0", docker_package_state must be "present", empty means latest
 
 The `docker_edition` should be either `ce` (Community Edition) or `ee` (Enterprise Edition). You can also specify a specific version of Docker to install using the distribution-specific format: Red Hat/CentOS: `docker-{{ docker_edition }}-<VERSION>`; Debian/Ubuntu: `docker-{{ docker_edition }}=<VERSION>`.
 

defaults/main.yml

@@ -2,6 +2,7 @@
 # Edition can be one of: 'ce' (Community Edition) or 'ee' (Enterprise Edition).
 docker_edition: 'ce'
 docker_package: "docker-{{ docker_edition }}"
+docker_version: ""
 docker_package_state: present
 
 # Service options.

tasks/main.yml

@@ -7,7 +7,7 @@
 
 - name: Install Docker.
   package:
-    name: "{{ docker_package }}"
+    name: "{{ docker_package }}{{ docker_package_version | default('') }}"
     state: "{{ docker_package_state }}"
   notify: restart docker
 

tasks/setup-Debian.yml

@@ -36,3 +36,14 @@
     repo: "{{ docker_apt_repository }}"
     state: present
     update_cache: true
+
+- name: get docker-version from apt
+  shell: apt-cache madison docker-{{ docker_edition }} | grep -P '{{ docker_version }}~{{ docker_edition }}~[^\s]*' -o
+  register: apt_docker_version_register
+  when: docker_version != ""
+  changed_when: false
+
+- name: set fact for docker version
+  set_fact:
+    docker_package_version: "={{ apt_docker_version_register.stdout_lines[0] }}"
+  when: apt_docker_version_register.rc == 0

tasks/setup-RedHat.yml

@@ -33,3 +33,14 @@
     section: 'docker-{{ docker_edition }}-test'
     option: enabled
     value: '{{ docker_yum_repo_enable_test }}'
+
+- name: get docker-version from yum
+  shell: yum list docker-{{ docker_edition }} --showduplicates  | grep -P '{{ docker_version }}.{{ docker_edition }}[^\s]*' -o
+  register: apt_docker_version_register
+  when: docker_version != ""
+  changed_when: false
+
+- name: set fact for docker version
+  set_fact:
+    docker_package_version: "-{{ apt_docker_version_register.stdout_lines[0] }}"
+  when: apt_docker_version_register.rc == 0