diff --git a/Dockerfile b/Dockerfile
index cc2996f..1c12f13 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ RUN apk add boost-dev  \
   openssl-dev zlib-dev \
   make g++
 
-RUN adduser builder
+RUN adduser -D builder
 USER builder
 
 WORKDIR /home/builder
@@ -25,7 +25,7 @@ COPY --from=builder x25519       /usr/bin
 COPY --from=builder famtool      /usr/bin
 COPY --from=builder autoconf     /usr/bin
 
-RUN adduser runner -D -H -u 1001
+RUN adduser -D -H -u 1001 runner
 USER runner
 
 WORKDIR /