fix(Makefile): remove unqualified image tag

Makefile

@@ -9,14 +9,13 @@ CONTAINER_RUNTIME?=$(shell which podman)
 
 # RPMBUILDER_IMAGE_REGISTRY_NAME
 # Defines the name of the new container to be built using several variables.
-RPMBUILDER_IMAGE_REGISTRY_NAME:=docker.io
-RPMBUILDER_IMAGE_REGISTRY_USER:=volkerraschek
+RPMBUILDER_IMAGE_REGISTRY_NAME:=git.cryptic.systems
+RPMBUILDER_IMAGE_REGISTRY_USER:=volker.raschek
 
 RPMBUILDER_IMAGE_NAMESPACE?=${RPMBUILDER_IMAGE_REGISTRY_USER}
 RPMBUILDER_IMAGE_NAME:=rpm-builder
 RPMBUILDER_IMAGE_VERSION?=latest
 RPMBUILDER_IMAGE_FULLY_QUALIFIED=${RPMBUILDER_IMAGE_REGISTRY_NAME}/${RPMBUILDER_IMAGE_NAMESPACE}/${RPMBUILDER_IMAGE_NAME}:${RPMBUILDER_IMAGE_VERSION}
-RPMBUILDER_IMAGE_UNQUALIFIED=${RPMBUILDER_IMAGE_NAMESPACE}/${RPMBUILDER_IMAGE_NAME}:${RPMBUILDER_IMAGE_VERSION}
 
 # BUILD CONTAINER IMAGE
 # ==============================================================================
@@ -28,14 +27,13 @@ container-image/build:
 		--no-cache \
 		--pull \
 		--tag ${RPMBUILDER_IMAGE_FULLY_QUALIFIED} \
-		--tag ${RPMBUILDER_IMAGE_UNQUALIFIED} \
 		.
 
 # DELETE CONTAINER IMAGE
 # ==============================================================================
 PHONY:=container-image/delete
 container-image/delete:
-	- ${CONTAINER_RUNTIME} image rm ${RPMBUILDER_IMAGE_FULLY_QUALIFIED} ${RPMBUILDER_IMAGE_UNQUALIFIED}
+	- ${CONTAINER_RUNTIME} image rm ${RPMBUILDER_IMAGE_FULLY_QUALIFIED}
 	- ${CONTAINER_RUNTIME} image rm ${BASE_IMAGE_FULL}
 
 # PUSH CONTAINER IMAGE