diff --git a/.gitignore b/.gitignore
index ea8c4bf..46b76ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 /target
+/example/toda
+/toda
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 0c5cd02..a7c18bd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,18 +1,15 @@
-example-image:
+example-image: image
 	docker build -t io-example ./example
 
 volume:
 	docker volume create io-example
 
 example: example-image volume
-	docker run --ulimit nofile=5000:5000 -v io-example:/var/run/test -v /tmp:/tmp -it io-example /main-app
+	docker run --privileged --ulimit nofile=5000:5000 -v io-example:/var/run/test -v /tmp:/tmp -it io-example /main-app
 
 debug:
 	cargo build
 
-example-inject:debug
-	cat ./io-inject-example.json|sudo ./target/debug/toda --path /var/run/test --pid $$(pgrep main-app) --verbose trace
-
 image:
 	DOCKER_BUILDKIT=1 docker build --build-arg HTTP_PROXY=${HTTP_PROXY} --build-arg HTTPS_PROXY=${HTTPS_PROXY} . -t chaos-mesh/toda
 
diff --git a/example/Dockerfile b/example/Dockerfile
index 7602cc4..24a96cc 100644
--- a/example/Dockerfile
+++ b/example/Dockerfile
@@ -7,7 +7,7 @@ RUN go get -d -v ./...
 
 RUN go build -o /go/bin/app
 
-FROM alpine:3.12
+FROM chaos-mesh/toda
 COPY --from=build-env /go/bin/app /
 COPY --from=build-env /go/bin/app /main-app
 CMD ["/app"]
diff --git a/example/example.go b/example/example.go
index c069311..985c243 100644
--- a/example/example.go
+++ b/example/example.go
@@ -72,7 +72,7 @@ func main() {
 				}
 			}
 
-			time.Sleep(time.Microsecond)
+			time.Sleep(time.Second)
 
 			buf := make([]byte, originalLength+len(count))
 			n, err := f.Read(buf)