diff --git a/day4/prac1/Dockerfile b/day4/prac1/Dockerfile
index b2d3c3a..72e4e53 100644
--- a/day4/prac1/Dockerfile
+++ b/day4/prac1/Dockerfile
@@ -1,5 +1,8 @@
-FROM golang:1.24
+FROM golang:1.24 AS builder
 WORKDIR /src
 COPY ./main.go .
 RUN go build -o /bin/hello ./main.go
-CMD ["/bin/hello"]
+
+FROM debian:bullseye-slim
+COPY --from=builder /bin/hello /bin/hello
+CMD ["/bin/hello"]
\ No newline at end of file