Split into roles and add parameters

roles/base-docker/README.md

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+base-docker
+===========
+Installs and configures docker
+
+Role Variables
+--------------
+`docker_compose_files_folder` The path where all the compose projects folders will be stored
+`docker_compose_persistence_folder` The path where all persistent data will be stored, defaults to `/var/lib`
+
+Dependencies
+------------
+- base

roles/base-docker/defaults/main.yml

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+---
+docker_compose_files_folder: /etc/compose
+docker_compose_persistence_folder: /var/lib

roles/base-docker/meta/main.yml

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+dependencies:
+  - base

roles/base-docker/tasks/main.yml

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+---
+- name: Install docker packages
+  package: name={{item}} state=present update_cache=yes
+  with_items:
+    - docker
+    - docker-compose
+- name: Enable and start docker service
+  systemd:
+    name: docker.service
+    state: started
+    enabled: True
+- name: Create images config folder
+  file: dest={{docker_compose_files_folder}} state=directory