OBJECTS := $(shell find -mindepth 2 -name 'Dockerfile*') all: $(OBJECTS) %/Dockerfile: Dockerfile.j2 render_template ./render_template "$<" "{\"target_file\":\"$@\"}" > "$@" %/Dockerfile.alpine: Dockerfile.j2 render_template ./render_template "$<" "{\"target_file\":\"$@\"}" > "$@"