add postgres installation

deployment/roles/postgres/tasks/main.yml

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+---
+# tasks file for postgres
+- name: Create postgres docker directory if it doesn't exist
+  file:
+    path: "{{ postgres_dir }}"
+    state: directory
+
+- name: Install pgsql client
+  apt:
+    name:
+      - postgresql-client
+    update_cache: true
+    state: latest
+  when: ansible_os_family == 'Debian'
+
+- name: Copy postgres docker compose file
+  template:
+    src: postgres-docker-compose.yaml.j2
+    dest: "{{ postgres_dir }}/docker-compose.yaml"
+
+- name: Check if {{ postgres_container_name }} exists
+  community.docker.docker_container_info:
+    name: "{{ postgres_container_name }}"
+  register: postgres_running
+
+- name: Ask for confirmation to remove {{ postgres_container_name }}
+  pause:
+    prompt: "We found a running {{ postgres_container_name }} container. Would you like to remove it? (y/n)"
+    echo: yes
+  register: confirmation
+  when: postgres_running.exists
+  delegate_to: localhost
+  run_once: true
+
+- block:
+    - name: Stop and remove {{ postgres_container_name }} if confirmed
+      community.docker.docker_container:
+        name: "{{ postgres_container_name }}"
+        state: absent
+      when: postgres_running.exists and confirmation.user_input | lower in ['y', 'yes']
+
+    - name: Remove {{ postgres_container_name }} if it exists
+      community.docker.docker_container:
+        name: "{{ postgres_container_name }}"
+        state: absent
+      when: postgres_running.exists and confirmation.user_input | lower in ['y', 'yes']
+
+    - name: Prune docker containers
+      shell: sudo docker container prune -f
+      when: postgres_running.exists and confirmation.user_input | lower in ['y', 'yes']
+
+    - name: Start {{ postgres_container_name }} with docker compose
+      community.docker.docker_compose:
+        project_src: "{{ postgres_dir }}"
+        files:
+        - docker-compose.yaml

deployment/roles/postgres/templates/postgres-docker-compose.yaml.j2

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+version: '{{ compose_version }}'
+
+services:
+  postgres:
+    container_name: {{ postgres_container_name }}
+    restart: unless-stopped
+    hostname: {{ postgres_container_name }}
+    image: {{ postgres_docker_image }}
+    ports:
+      - {{ private_ip }}:{{ postgres_port }}:{{ postgres_port }}
+    volumes:
+      - {{ postgres_data_dir }}:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_USER={{ postgres_user }}
+      - POSTGRES_PASSWORD={{ postgres_password }}
+      - POSTGRES_DB={{ postgres_db }}