Initial code

handlers/main.yml

+---
+# file: roles/plantuml/handlers/main.yml
+
+- name: Re-create the plantuml container
+  docker_container:
+    name: plantuml
+    image: plantuml/plantuml-server
+    init: yes
+    state: started
+    recreate: yes
+    restart_policy: always
+    ports:
+      - '8081:8080'

meta/main.yml

+---
+
+dependencies:
+  - role: docker

tasks/main.yml

+##
+# Ansible file to install PlantUML
+#
+
+---
+# file: roles/plantuml/tasks/main.yml
+
+- name: PlantUML Role
+  set_fact:
+    role_plantuml_started: yes
+  tags:
+    - always
+
+- block:
+
+    - name: Import plantuml
+      import_tasks: plantuml.yml
+
+    - name: Remember that this role had been run
+      set_fact:
+        role_plantuml_completed: yes
+      tags:
+        - always
+
+  when: (not excluded_roles or "plantuml" not in excluded_roles) and role_plantuml_completed is not defined

tasks/plantuml.yml

+---
+# file: roles/plantuml/tasks/plantuml.yml
+
+- name: Pull docker image
+  docker_image:
+    name: plantuml/plantuml-server
+    source: pull
+    force_source: yes
+  notify:
+    - Re-create the plantuml container