Permit to provide proxies for installation

defaults/main.yml

@@ -52,14 +52,17 @@ daemon_json:
 # Be aware that granted users can easily get full root access on the docker host system!
 docker_group_members: []
 
+# Shall we have to set the docker proxies the same as those used during installation
+docker_use_install_proxies: true
+
 # configurable proxies: a reasonable default is to re-use the proxy from ansible_env:
 # docker_http_proxy: "{{ ansible_env.http_proxy|default('') }}"
 # Notes:
 # if docker_http_proxy==""   the role sets HTTP_PROXY="" (useful to 'empty' existing ENV var)
 # if docker_http_proxy is undefined the role will not set/modify any ENV vars
-docker_http_proxy:
-docker_https_proxy:
-docker_no_proxy:
+docker_http_proxy: "{{proxy_env.http_proxy if (docker_use_install_proxies and proxy_env is defined and proxy_env.http_proxy is defined) else \"\"}}"
+docker_https_proxy: "{{proxy_env.https_proxy if (docker_use_install_proxies and proxy_env is defined and proxy_env.https_proxy is defined) else \"\"}}"
+docker_no_proxy: "{{proxy_env.no_proxy if (docker_use_install_proxies and proxy_env is defined and proxy_env.no_proxy is defined) else \"\"}}"
 
 # Flags for whether to install pip packages
 pip_install_pip: true
@@ -105,3 +108,9 @@ ufw_set_forward_policy: true
 # Set to 'no' if docker daemon shall not be started.
 # (e.g. in case of a machine which only controls other docker hosts via docker-machine)
 start_docker_daemon: true
+
+# Specify here the proxies config to use for installation
+#proxy_env:
+#  http_proxy: 'http://192.168.0.10'
+#  https_proxy: 'http://192.168.0.10'
+#  no_proxy: '192.168.0.20'

tasks/main.yml

@@ -39,6 +39,7 @@
     state: present
     update_cache: yes
     cache_valid_time: "{{ docker_apt_cache_valid_time }}"
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
   when: docker_aufs_enabled and ansible_distribution_version is version_compare('14.04', '==') and ansible_kernel is version_compare('4.4', '<')
 
   register: linux_image_extra_install
@@ -50,6 +51,7 @@
     state: present
     update_cache: yes
     cache_valid_time: "{{ docker_apt_cache_valid_time }}"
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
   when: linux_image_extra_install is failed
 
 - name: Ensure dirmngr is available
@@ -58,37 +60,43 @@
     state: present
     update_cache: yes
     cache_valid_time: "{{ docker_apt_cache_valid_time }}"
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
 
 - name: Add Docker repository key
   apt_key:
     id: "{{ apt_key_sig }}"
     keyserver: "{{ apt_key_url }}"
     state: present
   register: add_repository_key
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
   ignore_errors: true
 
 - name: Alternative | Add Docker repository key
   shell: "apt-key adv --fetch-keys {{ apt_key_url }}"
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
   when: add_repository_key is failed
 
 - name: HTTPS APT transport for Docker repository
   apt:
     name: apt-transport-https
     state: present
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
 
 - name: Add Docker repository and update apt cache
   apt_repository:
     repo: "{{ apt_repository }}"
     mode: '644'
     update_cache: yes
     state: present
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
 
 - name: Install (or update) docker package
   apt:
     name: "{{ docker_pkg_name }}"
     state: "{{ 'latest' if update_docker_package else 'present' }}"
     update_cache: "{{ update_docker_package }}"
     cache_valid_time: "{{ docker_apt_cache_valid_time }}"
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
 
 - name: Set systemd playbook var
   set_fact:
@@ -186,6 +194,7 @@
     state: latest
     update_cache: yes
     cache_valid_time: "{{ docker_apt_cache_valid_time }}"
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
 
 # Display an informative message if the docker-compose version needs to be downgraded
 - name: Docker-compose version downgrade
@@ -232,6 +241,7 @@
     - name: docker-compose
       version: "{{ _pip_version_docker_compose }}"
       install: "{{ pip_install_docker_compose }}"
+  environment: "{{proxy_env if proxy_env is defined else {}}}"
   when: item.install|bool
 
 - name: Check if /etc/updatedb.conf exists