refactor(Makefile): use slightly shorter (and more obfuscated), but at least somehow documented syntax for empty receipts

Makefile

@@ -17,13 +17,11 @@ dockerized-build: dockerized-frontend-build dockerized-backend-build
 
 .PHONY: dockerized-frontend-%
 dockerized-frontend-%: FRADRIVE_DOCKERFILE=frontend
-dockerized-frontend-%: --dockerized-frontend-%
-	@:
+dockerized-frontend-%: --dockerized-frontend-%;
 
 .PHONY: dockerized-backend-%
 dockerized-backend-%: FRADRIVE_DOCKERFILE=backend
-dockerized-backend-%: --dockerized-backend-%
-	@:
+dockerized-backend-%: --dockerized-backend-%;
 
 #.PHONY: start
 #start: frontend-build
@@ -37,13 +35,11 @@ test: frontend-test backend-test i18n-check
 
 # TODO: dockerify
 .PHONY: backend-%
-backend-%: --backend-%-dev
-	@:
+backend-%: --backend-%-dev;
 
 # TODO: dockerify
 .PHONY: backend-%-prod # TODO deprecated in favor of bins; remove
-backend-%-prod: --backend-%-prod
-	@:
+backend-%-prod: --backend-%-prod;
 
 # TODO: dockerify
 # TODO: this creates more binaries than just bin/uniworx as side effect! Document or change behaviour?
@@ -53,14 +49,12 @@ bin/uniworxdev: --backend-build-dev
 # TODO replace with bin/uniworxdev
 .PHONY: --backend-%-dev
 --backend-%-dev: stackopts=--flag uniworx:dev
---backend-%-dev: --backend-%
-	@:
+--backend-%-dev: --backend-%;
 
 # TODO deprecated in favor of binary targets
 .PHONY: --backend-%-prod
 --backend-%-prod: stackopts=--flag uniworx:-dev
---backend-%-prod: --backend-%
-	@:
+--backend-%-prod: --backend-%;
 
 .PHONY: --backend-build
 --backend-build:
@@ -95,8 +89,7 @@ bin/uniworxdb: .stack-work.lock
 
 .PHONY: frontend-%
 frontend-%: node_modules well-known
-frontend-%: --frontend-%
-	@:
+frontend-%: --frontend-%;
 
 .PHONY: --frontend-build
 --frontend-build: