diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..3c11240
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,34 @@
+# used by docker_* targets
+docker_image ?= blog_os
+tag ?= 0.1
+pwd ?= $(realpath ./)
+ifeq ($(OS),Windows_NT)
+uid ?= 0
+gid ?= 0
+innerpwd ?= /root/blog_os
+else
+uid ?= $(shell id -u)
+gid ?= $(shell id -g)
+innerpwd ?= $(pwd)
+endif
+docker_cargo_volume ?=  blogos-$(uid)-$(gid)-cargo
+docker_rustup_volume ?=  blogos-$(uid)-$(gid)-rustup
+docker_args ?= -e LOCAL_UID=$(uid) -e LOCAL_GID=$(gid) -v $(docker_cargo_volume):/usr/local/cargo -v $(docker_rustup_volume):/usr/local/rustup -v $(pwd):$(innerpwd) -w $(innerpwd)
+docker_clean_args ?= $(docker_cargo_volume) $(docker_rustup_volume)
+
+# docker_* targets
+
+docker_build:
+	@docker build docker/ -t $(docker_image):$(tag)
+
+docker_iso:
+	@docker run --rm $(docker_args) $(docker_image):$(tag) make iso
+
+docker_interactive:
+	@docker run -it --rm $(docker_args) $(docker_image):$(tag)
+
+docker_clean:
+	@docker volume rm $(docker_clean_args)
+
+docker_riscv:
+	@docker run -it --rm $(docker_args) wangrunji0408/riscv-rust
\ No newline at end of file
diff --git a/README.md b/README.md
index 462132c..3178d53 100644
--- a/README.md
+++ b/README.md
@@ -18,14 +18,14 @@ Available on DockerHub: `wangrunji0408/riscv-rust`
 
 ```bash
 git clone https://github.com/wangrunji0408/RustOS.git -b riscv --recursive
-cd RustOS/kernel
+cd RustOS
 # Pull docker image and enter docker interactive shell
 make docker_riscv
 # Inside docker ...
+cd kernel
 # Patch the atomic mod of core lib
 make patch-core
-make build
-make justrun
+make run
 ```
 
 ## Summary
diff --git a/kernel/Makefile b/kernel/Makefile
index 04f8612..63c4538 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -162,42 +162,4 @@ $(riscv_user_img_obj): ../user/user-riscv.img
 
 # patch Rust core for RISCV32I atomic
 patch-core:
-	@patch -p0 /rust/rust-riscv-rust-1.26.0-1-dev/src/libcore/sync/atomic.rs src/arch/riscv32/atomic.patch
-
-# used by docker_* targets
-docker_image ?= blog_os
-tag ?= 0.1
-pwd ?= $(realpath ./)
-ifeq ($(OS),Windows_NT)
-uid ?= 0
-gid ?= 0
-innerpwd ?= /root/blog_os
-else
-uid ?= $(shell id -u)
-gid ?= $(shell id -g)
-innerpwd ?= $(pwd)
-endif
-docker_cargo_volume ?=  blogos-$(uid)-$(gid)-cargo
-docker_rustup_volume ?=  blogos-$(uid)-$(gid)-rustup
-docker_args ?= -e LOCAL_UID=$(uid) -e LOCAL_GID=$(gid) -v $(docker_cargo_volume):/usr/local/cargo -v $(docker_rustup_volume):/usr/local/rustup -v $(pwd):$(innerpwd) -w $(innerpwd)
-docker_clean_args ?= $(docker_cargo_volume) $(docker_rustup_volume)
-
-# docker_* targets
-
-docker_build:
-	@docker build docker/ -t $(docker_image):$(tag)
-
-docker_iso:
-	@docker run --rm $(docker_args) $(docker_image):$(tag) make iso
-
-docker_run: docker_iso
-	@qemu-system-$(arch) -cdrom $(iso) -s
-
-docker_interactive:
-	@docker run -it --rm $(docker_args) $(docker_image):$(tag)
-
-docker_clean:
-	@docker volume rm $(docker_clean_args)
-
-docker_riscv:
-	@docker run -it --rm $(docker_args) wangrunji0408/riscv-rust
\ No newline at end of file
+	@patch -p0 /rust/rust-riscv-rust-1.26.0-1-dev/src/libcore/sync/atomic.rs src/arch/riscv32/atomic.patch
\ No newline at end of file