diff --git a/build-docker.sh b/build-docker.sh
index 98d6752..92a88c9 100755
--- a/build-docker.sh
+++ b/build-docker.sh
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 cd "$1"
 
 BUILD_TYPE="$2"
@@ -18,6 +20,11 @@ cmake \
     ../
 
 make -j$(nproc) --output-sync
+
+if [ $? -ne 0 ]; then
+  exit 10
+fi
+
 make install DESTDIR=AppDir
 
 mkdir -p AppDir/usr/lib/python3/dist-packages/
@@ -34,4 +41,3 @@ chmod +x AppDir/usr/bin/kicad
 
 LD_LIBRARY_PATH=$(pwd)/AppDir/usr/lib/x86_64-linux-gnu/ linuxdeploy --appdir AppDir -d $(pwd)/AppDir/usr/share/applications/kicad.desktop --output appimage
 mv KiCad*.AppImage ../KiCad-$(git describe).AppImage
-mv KiCad*.AppImage.zsync ../KiCad-$(git describe).AppImage.zsync