Allow cleanup of logs as well and convert containerfile to a modifiable variable

Makefile

@@ -18,9 +18,10 @@ include config.mk
 #	touch $@
 
 MANIFEST_FILE = ${IMAGE_DIR}/manifest.json
+BUILD_INSTRUCTIONS = Containerfile
 
 # Autogenerated lists
-CONTAINERS := $(shell find ./ -name 'Containerfile' -exec 'dirname' '{}' ';' | cut -d'/' -f2-)
+CONTAINERS := $(shell find ./ -name '${BUILD_INSTRUCTIONS}' -exec 'dirname' '{}' ';' | cut -d'/' -f2-)
 IMAGE_DIRS := $(addsuffix /${IMAGE_DIR},${CONTAINERS})
 BUILD_IDS := $(addsuffix /${BUILD_ID_OUT},${CONTAINERS})
 BUILD_LOGS := $(addsuffix /${BUILD_LOG},${CONTAINERS})
@@ -44,7 +45,7 @@ localbuild: $(BUILD_IDS)
 		$(shell cat $<) \
 		dir:$*/${IMAGE_DIR}
 
-%/${BUILD_ID_OUT}: %/Containerfile
+%/${BUILD_ID_OUT}: %/${BUILD_INSTRUCTIONS}
 	buildah build \
 		--jobs 0 \
 		--network=none \
@@ -56,7 +57,10 @@ localbuild: $(BUILD_IDS)
 		$*
 
 # Clean up
-clean: cleanbuild cleandirs
+clean: cleanbuild cleandirs cleanlogs
+
+cleanlogs:
+	-rm -rv ${BUILD_LOGS}
 
 cleanbuild:
 	-rm -rv ${BUILD_IDS}
@@ -64,7 +68,7 @@ cleanbuild:
 cleandirs:
 	-rm -rv ${IMAGE_DIRS}
 
-.PHONY: all clean cleanbuild cleandirs localbuild unified
+.PHONY: all clean cleanbuild cleandirs cleanlogs localbuild unified
 .SUFFIXES:
 
 # Somehow GNU make forgets these are intermediates if not explicitly stated, feel free to look into it *shrug*