diff --git a/deps/Dockerfile b/deps/Dockerfile
index 2219170..1dc7510 100644
--- a/deps/Dockerfile
+++ b/deps/Dockerfile
@@ -10,6 +10,7 @@ RUN apt-get update && \
     bsdmainutils \
     flex \
     gcc \
+    gdb \
     git \
     groff \
     libncursesw5-dev \
@@ -30,8 +31,13 @@ RUN apt-get clean
 #
 RUN git clone https://github.com/NetHack/NetHack.git 
 RUN cd NetHack && \
+    sed -i 's/#ifndef SYSCF/#ifdef SYSCF/g' include/config.h && \
     sys/unix/setup.sh sys/unix/hints/linux && \
-    make all
+    sed -i '/POSTINSTALL=/d' Makefile && \
+    sed -i 's/.*-DSYSCF -DSYSCF_FILE=.*/CFLAGS+=-DSECURE/' Makefile && \
+    cat Makefile && \
+    make all && \
+    make install
 RUN find /* -name nethack
 RUN chmod 777 /NetHack/sys/unix/sysconf