diff --git a/Dockerfile b/Dockerfile
index cb849fc..ea909cd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,18 +20,17 @@ libssl-dev tar libglew-dev libgl1-mesa-dev
 RUN cd /root/ && mkdir -pv /root/zandronum_build && mkdir -pv /root/complete
 
 RUN cd /root/zandronum_build && \
-hg clone https://hg.osdn.net/view/zandronum/zandronum-stable zandronum && \
+hg clone --insecure https://hg.osdn.net/view/zandronum/zandronum-stable zandronum && \
 mkdir -pv zandronum/buildclient zandronum/buildserver
 
-RUN cd /root/zandronum_build &&
-wget -nc https://zandronum.com/essentials/fmod/fmodapi44464linux.tar.gz &&
+RUN cd /root/zandronum_build  \
+wget -nc https://zandronum.com/essentials/fmod/fmodapi44464linux.tar.gz  \
 tar -xvzf fmodapi44464linux.tar.gz -C zandronum
 
-RUN c="$(lscpu -p | grep -v '#' | sort -u -t , -k 2,4 | wc -l)" ; [ "$c" -eq 0 ] && c=1 \
-cd ~/zandronum_build/zandronum/buildserver && \
+RUN cd /root/zandronum_build/zandronum/buildserver && \
 cmake .. -DCMAKE_BUILD_TYPE=Release -DSERVERONLY=ON -DRELEASE_WITH_DEBUG_FILE=OFF && \
-make -j$c
+make -j$(nproc)
 
 
-RUN cp zandronum-server /root/complete/
+RUN cp /root/zandronum_build/zandronum/buildserver/zandronum-server /root/complete/