service: Make supporting containers accessible using simple hostnames

roles/service/tasks/additional.yaml

@@ -13,6 +13,7 @@
     container_networks: "{{ _service_container_networks }}"
     container_ip: "{{ _service_additional_container_ip }}"
     container_secrets: "{{ _service_additional_container.secrets | default(_service_container_secrets) }}"
+    container_hostname: "{{ _service_additional_container.name | regex_replace('^' ~ service_name ~ '-', '') }}"
     container_env: "{{ _service_additional_container.env | default(service_container_env) }}"
     container_requires: "{{ _service_container_requires }}"
     container_wants: "{{ service_wants }}"

roles/service/tasks/database.yaml

@@ -14,6 +14,7 @@
         source: "{{ _service_database_name }}"
         destination: "{{ _service_database_mount_destination }}"
     container_networks: "{{ _service_database_networks }}"
+    container_hostname: "{{ service_database_type }}"
     container_ip: >-
       {{ service_container_ip | ansible.utils.ipmath(1) if _service_static_ip else '' }}
     container_secrets:

roles/service/tasks/redis.yaml

@@ -7,6 +7,7 @@
     container_image: docker.io/valkey/valkey:alpine
     container_networks:
       - "{{ service_name }}"
+    container_hostname: redis
     container_ip: >-
       {{ service_container_ip | ansible.utils.ipmath(2) if _service_static_ip else '' }}
     container_auto_update: "{{ service_auto_update }}"