doug@ip-192-168-5-156 slice-docker-images (dev) (master)*$ cat Makefile
BUILDS := $(wildcard */Dockerfile)

build_%:
	@echo "Building $$@"
	@echo docker build -t $* --force-rm $*

test_%: build_%
	@echo "Testing $$@"

push_%: test_%
	@echo "Pushing $$@"

#all: build test release
release: $(addprefix push_,$(BUILDS))

doug@ip-192-168-5-156 slice-docker-images (dev) (master)*$ make release
make: *** No rule to make target `push_slice-oracle-jdk/Dockerfile', needed by `release'.  Stop.