Merge "add docker_apt_key_env variable to docker role"

releasenotes/notes/add-docker-apt-key-env-1fa084e207f068f7.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    With the ``docker_apt_key_env`` variable it is now possible to set
+    enviroment variables for the get_url module to pass http proxy config.
+    `LP#2086700 <https://launchpad.net/bugs/2086700>`__

roles/docker/defaults/main.yml

@@ -11,6 +11,9 @@ docker_apt_key_file: "gpg"
 docker_apt_package: "docker-ce"
 docker_apt_package_pin: ""
 
+# Set environment variables when fetching gpg keys, to use a proxy for example
+docker_apt_key_env: {}
+
 # Docker Yum repository configuration.
 docker_yum_url: "https://download.docker.com/linux/centos"
 docker_yum_baseurl: "{{ docker_yum_url }}/$releasever/$basearch/stable"

roles/docker/tasks/repo-Debian.yml

@@ -30,6 +30,7 @@
     mode: "0644"
     force: true
   become: true
+  environment: "{{ docker_apt_key_env }}"
 
 - name: Install docker apt pin
   copy: