diff --git a/Dockerfile b/Dockerfile
index 215d7b9..ce50539 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,9 @@ RUN cd /go/src; go build -o sleeper
 
 FROM alpine
 
-COPY --from=builder /go/src/sleeper /sleeper
+ADD docker/entrypoint.sh /entrypoint.sh
+COPY --from=builder /go/src/sleeper /usr/bin/sleeper
 
-CMD ["/sleeper"]
\ No newline at end of file
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT "/entrypoint.sh"
\ No newline at end of file
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
new file mode 100644
index 0000000..96de7af
--- /dev/null
+++ b/docker/entrypoint.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+/usr/bin/sleeper -dir ${SERVER_PATH:/data}
\ No newline at end of file