diff --git a/Dockerfile b/Dockerfile
index e0dd25c..18eccb6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,6 @@
 FROM alpine AS builder
 ARG MDNS_REPEATER_VERSION=local
+WORKDIR /
 COPY mdns-repeater.c mdns-repeater.c
 RUN set -ex && \
     apk add --no-cache build-base && \