containerfiles: version the base image for dns

The fedora-minimal as based image for the dns one was always referring
to latest. Set the version to fedora 44 as the rest of the images.

Signed-off-by: Alice Frosi <afrosi@redhat.com>

Author: alicefr

containerfiles/dns/Containerfile

@@ -1,4 +1,5 @@
-FROM registry.fedoraproject.org/fedora-minimal
+ARG FEDORA_VERSION=44
+FROM registry.fedoraproject.org/fedora-minimal:${FEDORA_VERSION}
 
 RUN microdnf install -y dnsmasq && microdnf clean all