chore(deps): update container images to v0.44.0

Makefile

@@ -5,8 +5,8 @@ CONTAINER_RUNTIME?=$(shell which podman)
 
 # CONTAINER_IMAGE
 # Defines the name of the new container to be built using several variables.
-BUILD_IMAGE_REGISTRY_HOST?=git.cryptic.systems
-BUILD_IMAGE_REGISTRY_USER?=volker.raschek
+BUILD_IMAGE_REGISTRY_HOST:=git.cryptic.systems
+BUILD_IMAGE_REGISTRY_USER:=volker.raschek
 BUILD_IMAGE_NAMESPACE?=${BUILD_IMAGE_REGISTRY_USER}
 BUILD_IMAGE_REPOSITORY:=build-image
 BUILD_IMAGE_VERSION?=latest
@@ -14,9 +14,9 @@ BUILD_IMAGE_FULLY_QUALIFIED=${BUILD_IMAGE_REGISTRY_HOST}/${BUILD_IMAGE_NAMESPACE
 BUILD_IMAGE_UNQUALIFIED=${BUILD_IMAGE_NAMESPACE}/${BUILD_IMAGE_REPOSITORY}:${BUILD_IMAGE_VERSION}
 
 # MARKDOWNLINT_IMAGE
-MARKDOWNLINT_IMAGE_REGISTRY_HOST?=git.cryptic.systems
-MARKDOWNLINT_IMAGE_REPOSITORY?=volker.raschek/markdownlint
-MARKDOWNLINT_IMAGE_VERSION?=0.43.0 # renovate: datasource=docker registryUrl=https://git.cryptic.systems depName=volker.raschek/markdownlint
+MARKDOWNLINT_IMAGE_REGISTRY_HOST?=docker.io
+MARKDOWNLINT_IMAGE_REPOSITORY=volkerraschek/markdownlint
+MARKDOWNLINT_IMAGE_VERSION?=0.44.0 # renovate: datasource=docker registryUrl=https://docker.io depName=volkerraschek/markdownlint
 MARKDOWNLINT_IMAGE_FULLY_QUALIFIED=${MARKDOWNLINT_IMAGE_REGISTRY_HOST}/${MARKDOWNLINT_IMAGE_REPOSITORY}:${MARKDOWNLINT_IMAGE_VERSION}
 
 # BUILD CONTAINER IMAGE