Fix docker installation process on cent8

roles/docker/tasks/install.yml

@@ -9,7 +9,6 @@
     file: docker-ce-stable
     baseurl: https://download.docker.com/linux/centos/7/$basearch/stable
     gpgcheck: false
-    gpgcakey: https://download.docker.com/linux/centos/gpg
 
 - name: Install Docker on Cent7
   become: true
@@ -35,11 +34,3 @@
       - device-mapper-persistent-data  # Required for docker devicestorage driver
       - lvm2                           #  same
       - docker-ce-3:18.09.1-3.el7
-
-- name: Install python bindings
-  become: true
-  pip:
-    name:
-      - docker==4.2.0
-      - docker-compose==1.25.4
-    state: present