add centos support

Author: Gustavo Muniz do Carmo

.gitignore

@@ -1,2 +1,3 @@
 **/*/__pycache__
 .vscode
+env

README.md

@@ -23,11 +23,15 @@ If the build is succeeded, dependent roles may have also its builds triggered, t
 
 ## Test yourself
 
-Inside your [Python virtual environment](https://docs.python.org/3/tutorial/venv.html), run:
+First of all, create your [Python virtual environment](https://docs.python.org/3/tutorial/venv.html) and activate it:
 
-`pip install -r requirements.txt`
+`python -m venv env && source env/bin/activate`
 
-And then:
+After that, install all requirements:
+
+`pip install wheel && pip install -r requirements.txt`
+
+Finally, execute the test:
 
 `molecule test`
 

meta/main.yml

@@ -11,6 +11,10 @@ galaxy_info:
       versions:
         - bionic
         - xenial
+    - name: CentOS
+      versions:
+        - 7
+        - 8
 
   galaxy_tags:
     - docker

molecule/default/Dockerfile.j2

@@ -6,8 +6,8 @@ FROM {{ item.registry.url }}/{{ item.image }}
 FROM {{ item.image }}
 {% endif %}
 
-RUN if [ $(command -v apt-get) ]; then apt-get update && apt-get install -y python sudo bash ca-certificates && apt-get clean; \
-    elif [ $(command -v dnf) ]; then dnf makecache && dnf --assumeyes install python sudo python-devel python2-dnf bash && dnf clean all; \
+RUN if [ $(command -v apt-get) ]; then apt-get update && apt-get install -y python sudo bash ca-certificates python-apt aptitude && apt-get clean; \
+    elif [ $(command -v dnf) ]; then dnf makecache && dnf --assumeyes install python2 sudo python2-devel && dnf clean all; \
     elif [ $(command -v yum) ]; then yum makecache fast && yum install -y python sudo yum-plugin-ovl bash && sed -i 's/plugins=0/plugins=1/g' /etc/yum.conf && yum clean all; \
     elif [ $(command -v zypper) ]; then zypper refresh && zypper install -y python sudo bash python-xml && zypper clean -a; \
     elif [ $(command -v apk) ]; then apk update && apk add --no-cache python sudo bash ca-certificates; \

molecule/default/molecule.yml

@@ -8,8 +8,20 @@ lint:
 platforms:
   - name: xenial
     image: ubuntu:xenial
+    groups:
+      - ubuntu
   - name: bionic
     image: ubuntu:bionic
+    groups:
+      - ubuntu
+  - name: centos7
+    image: centos:7
+    groups:
+      - centos
+  - name: centos8
+    image: centos:8
+    groups:
+      - centos
 provisioner:
   name: ansible
   lint:

molecule/default/tests/test_default.py

@@ -3,7 +3,7 @@
 import testinfra.utils.ansible_runner
 
 testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
-    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')
+    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('ubuntu')
 
 
 def test_docker_is_installed(host):

tasks/centos.yml

@@ -0,0 +1,8 @@
+---
+- name: Install required packages
+  yum:
+    name: "{{ item }}"
+  loop:
+    - yum-utils
+    - device-mapper-persistent-data
+    - lvm2

tasks/main.yml

@@ -1,17 +1,3 @@
 ---
-- name: Install required packages
-  apt:
-    name: "{{ item }}"
-  loop:
-    - software-properties-common
-    - apt-transport-https
-- name: Add the Docker apt key
-  apt_key:
-    url: https://download.docker.com/linux/ubuntu/gpg
-- name: Add the Docker apt repository
-  apt_repository:
-    repo: "deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} stable"
-- name: Install Docker
-  apt:
-    name: docker-ce
-    update_cache: yes
+- name: Execute the appropriate tasks, depending on the distribution.
+  include: "{{ ansible_distribution | lower }}.yml"

tasks/ubuntu.yml

@@ -0,0 +1,20 @@
+---
+- name: Install required packages
+  apt:
+    name: "{{ item }}"
+  loop:
+    - software-properties-common
+    - apt-transport-https
+
+- name: Add the Docker apt key
+  apt_key:
+    url: https://download.docker.com/linux/ubuntu/gpg
+
+- name: Add the Docker apt repository
+  apt_repository:
+    repo: "deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} stable"
+
+- name: Install Docker
+  apt:
+    name: docker-ce
+    update_cache: yes