diff --git a/Dockerfile b/Dockerfile
index 8059721cc..7c54acc4a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,5 @@
 FROM debian:8
 
-WORKDIR /ddnet
-
-ADD . /ddnet
-
 RUN apt-get update && apt-get install -y mingw-w64 \
         wget \
         git \
@@ -28,17 +24,21 @@ RUN wget https://cmake.org/files/v3.11/cmake-3.11.0-rc2-Linux-x86_64.sh && \
         ./cmake-3.11.0-rc2-Linux-x86_64.sh --skip-license --prefix=/usr/local
 
 RUN mkdir /build
-VOLUME /build
+WORKDIR /ddnet
+ADD . /ddnet
 
 RUN printf '#!/bin/bash\n \
         set -x\n \
-        mkdir /build/linux && cd /build/linux\n \
+        mkdir /build/linux\n \
+        cd /build/linux\n \
         pwd\n \
         cmake /ddnet && make\n \
-        mkdir /build/win64 && cd /build/win64\n \
+        mkdir /build/win64\n \
+        cd /build/win64\n \
         pwd\n \
         cmake -DCMAKE_TOOLCHAIN_FILE=/ddnet/cmake/toolchains/mingw64.toolchain /ddnet && make\n \
-        mkdir /build/win32 && cd /build/win32\n \
+        mkdir /build/win32\n \
+        cd /build/win32\n \
         pwd\n \
         cmake -DCMAKE_TOOLCHAIN_FILE=/ddnet/cmake/toolchains/mingw32.toolchain /ddnet && make' \
         >> build-all.sh