feat(postgresql): add ansible role for postgresql deployment

roles/postgresql/tasks/initialize-docker.yml

@@ -0,0 +1,47 @@
+---
+- name: Ensure container '{{ postgresql_container_name }}' is {{ postgresql_container_state }} to initialise the database
+  community.docker.docker_container:
+    name: "{{ postgresql_container_name }}"
+    image: "{{ postgresql_container_image }}"
+    env: >-2
+      {{ postgresql_container_env | default({}, true)
+         | combine({'POSTGRES_PASSWORD': postgresql_superuser_password}) }}
+    user: "{{ postgresql_container_user | default(omit, true) }}"
+    ports: "{{ postgresql_container_ports | default(omit, true) }}"
+    labels: "{{ postgresql_container_labels | default(omit, true) }}"
+    volumes: "{{ postgresql_container_initdb_volumes }}"
+    recreate: "{{ postgresql_container_recreate | default(omit, true) }}"
+    networks: "{{ postgresql_container_networks | default(omit, true) }}"
+    etc_hosts: "{{ postgresql_container_etc_hosts | default(omit, true) }}"
+    memory: "{{ postgresql_container_memory | default(omit, true) }}"
+    memory_reservation: "{{ postgresql_container_memory_reservation | default(omit, true) }}"
+    oom_killer: "{{ postgresql_container_oom_killer | default(omit, true) }}"
+    oom_score_adj: "{{ postgresql_container_oom_score_adj | default(omit, true) }}"
+    shm_size: "{{ postgresql_container_shm_size | default(omit, true) }}"
+    ulimits: "{{ postgresql_container_ulimits | default(omit, true) }}"
+    restart_policy: "{{ postgresql_container_restart_policy | default(omit, true) }}"
+    state: "{{ postgresql_container_state }}"
+  register: postgresql_container_info
+
+- name: Wait for container startup
+  block:
+    - name: Wait for container startup (socket)
+      ansible.builtin.wait_for:
+        path: "{{ postgresql_config_unix_socket_directories | first  }}/.s.PGSQL.{{ postgresql_config_port }}"
+      when: "postgresql_config_connect_socket | bool"
+    - name: Wait for container startup (port)
+      ansible.builtin.wait_for:
+        host: >-2
+          {{ (pg_addresses == '*') | ternary(
+                 omit,
+                 postgresql_config_listen_addresses | first
+             ) }}
+        port: "{{ postgresql_config_port }}"
+      when: "not postgresql_config_connect_socket | bool"
+      vars:
+        pg_addresses: "{{ postgresql_config_listen_addresses | join(',') }}"
+
+- name: Ensure init container '{{ postgresql_container_name }}' is removed
+  community.docker.docker_container:
+    name: "{{ postgresql_container_name }}"
+    state: absent