Add Grafana role

roles/grafana/meta/argument_specs.yml

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+---
+
+argument_specs:
+  main:
+    short_description: Alpine container
+    description: "Sets up an alpine docker container. This role can be used as a template for other roles using the container role."
+    options:
+      databse_passwords:
+        description: "Passed to container role"
+        required: true
+        type: dict
+        options:
+          grafana:
+            description: "Grafana database password"
+            type: str
+            required: true
+      docker_vhost_domains:
+        description: "Passed to container role"
+        required: true
+        type: dict
+        options:
+          grafana:
+            description: "Grafana vhost domain"
+            type: list
+            required: true
+            elements: str
+
+      # All options after this will be passed directly to the container role
+      docker_host_user:
+        description: "Passed to container role"
+        required: false
+
+      docker_additional_services:
+        description: "Passed to container role"
+        required: false
+
+      docker_volume_type:
+        description: "Passed to container role"
+        required: false
+      reverse_proxy_type:
+        description: "Passed to container role"
+        required: false
+      ports:
+        description: "Passed to container role"
+        required: false
+      docker_entrypoint:
+        description: "Passed to container role"
+        required: false
+

roles/grafana/tasks/main.yml

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+---
+
+- name: Grafana container
+  import_role:
+    name: container
+  vars:
+    docker_service: grafana
+    docker_image: grafana/grafana
+    docker_image_http_port: 3000
+    docker_volumes:
+      - name: data
+        path: /var/lib/grafana
+    docker_database: postgres
+    docker_env:
+      GF_DATABASE_TYPE: postgres
+      GF_DATABASE_HOST: grafana_db:5432
+      GF_DATABASE_NAME: grafana
+      GF_DATABASE_USER: grafana
+      GF_DATABASE_PASSWORD: "{{ database_passwords.grafana }}"
+      GF_SERVER_DOMAIN: "{{ docker_vhost_domains.grafana[0] }}"
+      GF_SERVER_ROOT_URL: "https://{{ docker_vhost_domains.grafana[0] }}"