PHP module readline only needs to be checked for cli usage

build/ansible/DOCKERFILES/Dockerfile-mods.j2

@@ -224,6 +224,9 @@ RUN set -x \
 		{%- if ext == 'opcache' %}
 	&& php -m | grep -oiE '^Zend Opcache$' \
 	&& php-fpm -m | grep -oiE '^Zend Opcache$' \
+{# #}
+		{%- elif ext == 'readline' %}
+	&& php -m | grep -oiE '^readline$' \
 {# #}
 		{%- elif ext not in ['ioncube'] %}
 	&& php -m | grep -oiE '^{{ ext }}$' \

build/ansible/group_vars/all.yml

@@ -1248,7 +1248,6 @@ extensions_available:
       build_dep: [libpspell-dev]
       run_dep: [libaspell15]
   readline:
-    disabled: [5.3]
     already_avail: "{{ php_all_versions }}"
   recode:
     already_avail: [5.3, 5.4]