roles/docker/tasks/main.yml

@@ -1,13 +1,13 @@
 ---
 - name: add docker gpg key
   apt_key:
-    keyserver: pgp.key-server.io
+    keyserver: pgp.mit.edu
     id: 8D81803C0EBFCD88
     state: present
 
 - name: add docker apt repository
   apt_repository:
-    repo: deb https://download.docker.com/linux/ubuntu artful stable
+    repo: deb https://download.docker.com/linux/ubuntu bionic stable
     state: present
     update_cache: yes