chore(deps): update docker.io/plugins/docker docker tag to v20.18.8

Makefile

@@ -12,6 +12,7 @@ NETWORKTOOLS_IMAGE_NAMESPACE?=${NETWORKTOOLS_IMAGE_REGISTRY_USER}
 NETWORKTOOLS_IMAGE_NAME:=network-tools
 NETWORKTOOLS_IMAGE_VERSION?=latest
 NETWORKTOOLS_IMAGE_FULLY_QUALIFIED=${NETWORKTOOLS_IMAGE_REGISTRY_NAME}/${NETWORKTOOLS_IMAGE_NAMESPACE}/${NETWORKTOOLS_IMAGE_NAME}:${NETWORKTOOLS_IMAGE_VERSION}
+NETWORKTOOLS_IMAGE_UNQUALIFIED=${NETWORKTOOLS_IMAGE_NAMESPACE}/${NETWORKTOOLS_IMAGE_NAME}:${NETWORKTOOLS_IMAGE_VERSION}
 
 # BUILD CONTAINER IMAGE
 # ==============================================================================
@@ -22,14 +23,15 @@ container-image/build:
 		--no-cache \
 		--pull \
 		--tag ${NETWORKTOOLS_IMAGE_FULLY_QUALIFIED} \
-		--tag \
+		--tag ${NETWORKTOOLS_IMAGE_UNQUALIFIED} \
 		.
 
 # DELETE CONTAINER IMAGE
 # ==============================================================================
 PHONY:=container-image/delete
 container-image/delete:
-	- ${CONTAINER_RUNTIME} image rm ${NETWORKTOOLS_IMAGE_FULLY_QUALIFIED}
+	- ${CONTAINER_RUNTIME} image rm ${NETWORKTOOLS_IMAGE_FULLY_QUALIFIED} ${NETWORKTOOLS_IMAGE_UNQUALIFIED}
+	- ${CONTAINER_RUNTIME} image rm ${BASE_IMAGE_FULL}
 
 # PUSH CONTAINER IMAGE
 # ==============================================================================