From 29742209d144c352a3386f19026a3960c22a3f3e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20M=C3=B6ller?= <andre.moeller@nexinto.com>
Date: Thu, 8 Nov 2018 22:19:41 +0100
Subject: [PATCH] add docker_version

---
 README.md              |  1 +
 defaults/main.yml      |  1 +
 tasks/main.yml         |  2 +-
 tasks/setup-Debian.yml | 11 +++++++++++
 tasks/setup-RedHat.yml | 11 +++++++++++
 5 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 9a49840..f030c53 100644
--- a/README.md
+++ b/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>`.
 
diff --git a/defaults/main.yml b/defaults/main.yml
index 2bcb620..5242fc5 100644
--- a/defaults/main.yml
+++ b/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.
diff --git a/tasks/main.yml b/tasks/main.yml
index 8444ac7..7044ef0 100644
--- a/tasks/main.yml
+++ b/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
 
diff --git a/tasks/setup-Debian.yml b/tasks/setup-Debian.yml
index 23a49ae..dec5115 100644
--- a/tasks/setup-Debian.yml
+++ b/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
diff --git a/tasks/setup-RedHat.yml b/tasks/setup-RedHat.yml
index 0cd1a50..76876c9 100644
--- a/tasks/setup-RedHat.yml
+++ b/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