fix: improve registry URL regex to exclude image names with tags

The previous regex matched 'redis:7-alpine' because it saw ':7' as a port.
New regex requires:
- TLD with optional port (e.g. git.michaelschiemer.de:5000)
- Hostname with numeric port only (e.g. localhost:5000)
- localhost with optional port

This excludes image names like 'redis:7-alpine' or 'minio/minio:latest'.

deployment/ansible/playbooks/deploy-image.yml

@@ -248,7 +248,7 @@
       ansible.builtin.set_fact:
         registries_to_login: >-
           {%- set found_registries = actual_registry_urls_full.stdout | trim | split('\n') | select('match', '.+') | list -%}
-          {%- set filtered_registries = found_registries | select('match', '.*\.(de|com|org|net|io|dev).*|.*:[0-9]+.*|^localhost$') | list -%}
+          {%- set filtered_registries = found_registries | select('match', '.*\.(de|com|org|net|io|dev)(:[0-9]+)?$|^[^:]+:[0-9]+$|^localhost(:[0-9]+)?$') | list -%}
           {%- set default_registry = [docker_registry] -%}
           {%- if filtered_registries | length > 0 -%}
             {{ filtered_registries | unique | list }}