diff --git a/Dockerfile b/Dockerfile
index ec6b8d6..66fef88 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,20 +5,21 @@ RUN apt update; apt install -y wget; \
   echo 'deb http://apt.llvm.org/xenial/ llvm-toolchain-artful-5.0 main' >> /etc/apt/sources.list ; apt update;\
   apt install -y clang-5.0 lldb-5.0 lld-5.0 libc++-dev git cmake python-pip liblz4-dev; apt clean all
 
-RUN mkdir /build; chown nobody:nogroup /build
+RUN mkdir /nonexistent; chown nobody:nogroup /nonexistent
 USER nobody
 
-RUN cd /build; git clone https://github.com/reswitched/unicorn.git;\
+RUN cd /nonexistent; git clone --depth 1 https://github.com/reswitched/unicorn.git;\
   cd unicorn;\
   UNICORN_ARCHS="aarch64" ./make.sh;\
-  ./make.sh install;\  
-  cd /build; git clone https://github.com/reswitched/Mephisto.git; \
+  PREFIX=/nonexistent/usr ./make.sh install
+
+RUN cd /nonexistent; git clone  --depth 1 https://github.com/reswitched/Mephisto.git;\
   cd Mephisto;\
   pip install -r requirements.txt;\
-  make
+  EXTRA_CC_FLAGS="-I ../usr/include" EXTRA_LD_FLAGS="-L ../usr/lib" make
+
 
 EXPOSE 24689
 
-
-ENTRYPOINT ["/build/Mephisto/ctu"]
+ENTRYPOINT ["/nonexistent/Mephisto/ctu"]
 CMD ["${*}"]