diff --git a/suggestion/grid/Dockerfile b/suggestion/grid/Dockerfile
index ad829b1c9f7..1fda4746aa7 100644
--- a/suggestion/grid/Dockerfile
+++ b/suggestion/grid/Dockerfile
@@ -7,4 +7,4 @@ RUN go build -o grid
 FROM alpine:3.7
 WORKDIR /app
 COPY --from=build-env /go/src/github.com/kubeflow/hp-tuning/suggestion/grid /app/
-ENTRYPOINT ./grid
+ENTRYPOINT ["./grid"]
diff --git a/suggestion/hyperband/Dockerfile b/suggestion/hyperband/Dockerfile
index 07798450e73..eee2de9a93c 100644
--- a/suggestion/hyperband/Dockerfile
+++ b/suggestion/hyperband/Dockerfile
@@ -7,4 +7,4 @@ RUN go build -o hyperband
 FROM alpine:3.7
 WORKDIR /app
 COPY --from=build-env /go/src/github.com/kubeflow/hp-tuning/suggestion/hyperband /app/
-ENTRYPOINT ./hyperband
+ENTRYPOINT ["./hyperband"]
diff --git a/suggestion/random/Dockerfile b/suggestion/random/Dockerfile
index b166eb4506f..3fc89518d75 100644
--- a/suggestion/random/Dockerfile
+++ b/suggestion/random/Dockerfile
@@ -7,4 +7,4 @@ RUN go build -o random
 FROM alpine:3.7
 WORKDIR /app
 COPY --from=build-env /go/src/github.com/kubeflow/hp-tuning/suggestion/random /app/
-ENTRYPOINT ./random
+ENTRYPOINT ["./random"]