Added role molecule tests.

molecule/default/files/docker-compose.yml.j2

@@ -0,0 +1,7 @@
+---
+version: '2'
+services:
+  hello_world:
+    image: yeasy/simple-web:latest
+    expose:
+      - 80

molecule/default/molecule.yml

@@ -0,0 +1,40 @@
+---
+dependency:
+  name: galaxy
+  options:
+    role-file: molecule/default/requirements.yml
+    requirements-file: molecule/default/requirements.yml
+driver:
+  name: docker
+lint: |
+  yamllint --config-file molecule/default/yaml-lint.yml .
+  ansible-lint
+  flake8 --exclude .cache/
+platforms:
+  - name: debian10
+    image: "geerlingguy/docker-debian10-ansible:latest"
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+    privileged: true
+    pre_build_image: true
+provisioner:
+  name: ansible
+  lint: ansible-lint
+  playbooks:
+    converge: ${MOLECULE_PLAYBOOK:-playbook.yml}
+scenario:
+  name: default
+  test_sequence:
+    - lint
+    - destroy
+    - dependency
+    - syntax
+    - create
+    - converge
+    - idempotence
+    - verify
+    - destroy
+verifier:
+  name: testinfra
+  lint: flake8

molecule/default/playbook.yml

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+---
+- name: Deploy Docker
+  hosts: all
+  vars:
+    pip_executable: pip3
+    pip_install_packages:
+      - docker-compose
+      - docker
+  roles:
+    - geerlingguy.pip
+    - geerlingguy.docker
+
+- name: Converge
+  hosts: all
+  become: true
+
+  vars:
+    docker_compose_templates:
+      - docker_compose: "molecule/default/files/docker-compose.yml.j2"
+        dest: "/opt/test/docker-compose.yml"
+        owner: root
+        group: root
+        mode: 664
+
+    docker_compose_config_files: []
+
+  pre_tasks:
+    - name: Update apt cache.
+      apt:
+        update_cache: true
+      when: ansible_os_family == 'Debian'
+
+  roles:
+    - role: justereseau.docker-compose

molecule/default/requirements.yml

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+---
+roles:
+  - geerlingguy.pip
+  - geerlingguy.docker
+collections:
+  - community.general
+  - community.docker

molecule/default/yaml-lint.yml

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+---
+extends: default
+rules:
+  line-length:
+    max: 160
+    level: warning
+
+ignore: |
+  .cache/