Silence some makefile commands

docker/Makefile

@@ -1,3 +1,6 @@
+DOCKER_DIR := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
+TOP_DIR := $(realpath $(DOCKER_DIR)/..)
+include $(TOP_DIR)/openram.mk
 
 TAG_DATE := $(shell date +%F)
 all: build push
@@ -15,3 +18,13 @@ push:
 .PHONY: pull
 pull:
 	docker pull vlsida/openram-ubuntu:latest
+
+mount:
+	docker run -it -v $(TOP_DIR):/openram \
+		-v $(SKY130_PDK):$(SKY130_PDK) \
+		-e PDK_ROOT=$(PDK_ROOT) \
+                -e OPENRAM_HOME=/openram/compiler \
+                -e OPENRAM_TECH=/openram/technology \
+		--user $(UID):$(GID) \
+                vlsida/openram-ubuntu:latest
+.PHONY: mount