diff --git a/Dockerfile b/Dockerfile
index 26e1b20..62ca001 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,8 +8,8 @@ RUN \
   apk add openssl-dev && \
   apk add expat-dev && \
   apk add libevent-dev && \
-  mkdir tmp && \
-  cd tmp && \
+  mkdir build && \
+  cd build && \
   git clone https://github.com/NLnetLabs/unbound.git && \
   cd unbound && \
   ./configure --with-libnghttp2 --with-libevent --prefix /opt/unbound && \