Fixed conditionals for docker herkou and rvm installs

roles/common/tasks/main.yml

@@ -5,7 +5,7 @@
   apt: update_cache=yes
 
 - name: Upgrade APT to the lastest packages
-  apt: upgrade=safe
+  apt: upgrade=dist
 
 - name: Install htop
   apt: name=htop state=present
@@ -49,18 +49,19 @@
 - name: Is docker installed
   shell: which docker
   register: docker_installed
+  failed_when: "docker_installed.rc == 2 or docker_installed.rc == 3"
 
 - name: Get docker
   shell: curl -sSL https://get.docker.com/ | sh
-  when: docker_install is none
+  when: docker_installed.stdout == ""
 
 - name: Get docker compose
   shell: curl -L https://github.com/docker/compose/releases/download/1.5.0/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose  
-  when: docker_install is none
+  when: docker_installed.stdout == ""
 
 - name: Link docker compose
   shell: chmod +x /usr/local/bin/docker-compose
-  when: docker_install is none
+  when: docker_installed.stdout == ""
 
 - name: Set timezone to NewYork
   shell: timedatectl set-timezone America/New_York