Dockerfile bug fixed

Author: naeemaei

src/Dockerfile

@@ -11,7 +11,7 @@ RUN go build -v -o server ./cmd/main.go
 
 FROM debian:buster-slim 
 RUN set -x && apt-get update && DEBIAN_FRONTEND=noninteractive \
-    rm -df /var/lib/apt/lists/*
+    rm -rf /var/lib/apt/lists/*
 
 COPY --from=builder /app/server /app/server
 COPY --from=builder /app/config/config-docker.yml /app/config/config-docker.yml