adding docker role

roles/docker/files/docker.conf

@@ -0,0 +1,2 @@
+if $syslogtag contains 'docker/' then /var/log/docker.log
+& ~

roles/docker/files/logrotate_docker

@@ -0,0 +1,12 @@
+/var/log/docker.log
+{
+    rotate 7
+    daily
+    missingok
+    notifempty
+    delaycompress
+    compress
+    postrotate
+        invoke-rc.d rsyslog rotate > /dev/null
+    endscript
+}

roles/docker/handlers/main.yml

@@ -0,0 +1,10 @@
+---
+- name: restart docker
+  service:
+    name: docker
+    state: restarted
+
+- name: restart rsyslog
+  service:
+    name: rsyslog
+    state: restarted

roles/docker/tasks/main.yml

@@ -0,0 +1,34 @@
+- name: Install and configure Docker
+  tags: [docker, server]
+  become: true
+  block:
+    - name: Install Docker
+      include_role:
+        name: nickjj.docker
+
+    - name: Ensure group "docker" exists
+      group:
+        name: docker
+        state: present
+
+    - name: Ensure default user belongs also to docker group
+      user:
+        name: "{{ default_user }}"
+        groups: docker
+        append: yes
+
+    - name: Add rsyslog custom rules for Docker
+      copy:
+        src: docker.conf
+        dest: /etc/rsyslog.d/docker.conf
+        owner: root
+        group: root
+        mode: u=rw,g=r,o=r
+
+    - name: Add logrotate custom rules for Docker logs
+      copy:
+        src: logrotate_docker
+        dest: /etc/logrotate.d/docker
+        owner: root
+        group: root
+        mode: u=rw,g=r,o=r