diff --git a/.gitignore b/.gitignore
index d8fe4fa..97ac6e3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /.project
+/config.sh
diff --git a/config.sh.blank b/config.sh.blank
new file mode 100644
index 0000000..5b9c145
--- /dev/null
+++ b/config.sh.blank
@@ -0,0 +1 @@
+# PACKET_BUILD_DIR=/data/builder
\ No newline at end of file
diff --git a/docker-builder-data/build/script/common/manager.sh b/docker-builder-data/build/script/common/manager.sh
index 2ac621d..8d0cb01 100755
--- a/docker-builder-data/build/script/common/manager.sh
+++ b/docker-builder-data/build/script/common/manager.sh
@@ -29,6 +29,10 @@ export INCLUDE_SCRIPT_DIR=$SCRIPT_DIR/include
 export PACKET_SCRIPT_DIR=$SCRIPT_DIR/packet
 export PACKET_DIR=$ROOT_DIR/packet/$PLATFORM
 
+if [ ! -z $PACKET_BUILD_DIR ]; then
+	export PACKET_DIR=$PACKET_BUILD_DIR/$PLATFORM
+fi
+
 # vars
 
 INITIAL_LD_LIBRARY_PATH=$LD_LIBRARY_PATH
@@ -103,7 +107,7 @@ set_done() {
 }
 
 set_undone_silent() {
-    rm -f "$PACKET_DIR/$1/$2.*.done"
+    rm -f $PACKET_DIR/$1/$2.*.done
 	rm -f "$PACKET_DIR/$1/$2.done"
 }
 
@@ -117,7 +121,7 @@ clean_packet_directory_silent() {
         return 0
     fi
 	set_undone_silent $1 $2
-    rm -f -r "$PACKET_DIR/$1/$2"
+    rm -rf "$PACKET_DIR/$1/$2"
 }
 
 clean_packet_directory() {
@@ -422,6 +426,16 @@ clean() {
     clean_env_release $1
 }
 
+clean_all_install() {
+    clean_envdeps $1
+    clean_build $1
+    clean_install $1
+    clean_env $1
+    clean_install_release $1
+    clean_envdeps_release $1
+    clean_env_release $1
+}
+
 #############
 
 set_undone_download() {
diff --git a/docker-builder-data/build/script/packet/opentoonz-master.sh b/docker-builder-data/build/script/packet/opentoonz-master.sh
index abe730b..5db1998 100644
--- a/docker-builder-data/build/script/packet/opentoonz-master.sh
+++ b/docker-builder-data/build/script/packet/opentoonz-master.sh
@@ -40,7 +40,8 @@ pkbuild() {
 		set_done $NAME build.configure
     fi
 	
-	if ! make; then
+    # making in single thread is too slow, but life is too short...
+	if ! (make -j${THREADS} || make -j${THREADS} || make); then
 		return 1
 	fi
 }
diff --git a/docker-builder-data/build/script/packet/qt-5.7.sh b/docker-builder-data/build/script/packet/qt-5.7.sh
index d4bdd19..e4fc904 100644
--- a/docker-builder-data/build/script/packet/qt-5.7.sh
+++ b/docker-builder-data/build/script/packet/qt-5.7.sh
@@ -17,7 +17,8 @@ pkbuild() {
 		set_done $NAME build.cunfigure
     fi
     
-    if ! make; then
+    # making in single thread is too slow, but life is too short...
+	if ! (make -j${THREADS} || make -j${THREADS} || make); then
         return 1
     fi
 }
@@ -28,7 +29,8 @@ pkinstall() {
         return 1
     fi
     
-    if ! cp -f "/lib/x86_64-linux-gnu/libudev.so.0" "$INSTALL_PACKET_DIR/lib/libudev.so.0"; then
+    if ! (cp -f "/lib/x86_64-linux-gnu/libudev.so.0" "$INSTALL_PACKET_DIR/lib/libudev.so.0" \
+     || cp -f "/lib/i386-linux-gnu/libudev.so.0" "$INSTALL_PACKET_DIR/lib/libudev.so.0"); then
         return 1
     fi
     
diff --git a/docker-builder-i386/Dockerfile b/docker-builder-i386/Dockerfile
index 3091dee..8ccdcee 100644
--- a/docker-builder-i386/Dockerfile
+++ b/docker-builder-i386/Dockerfile
@@ -89,3 +89,5 @@ RUN apt-get -yq install ratfor
 RUN apt-get -yq install csh
 RUN apt-get -yq install libxcb-xinerama0-dev
 RUN apt-get -yq install xsltproc
+
+CMD mkdir /build
\ No newline at end of file
diff --git a/docker-builder-i386/run.sh b/docker-builder-i386/run.sh
index 3f422b8..018f895 100755
--- a/docker-builder-i386/run.sh
+++ b/docker-builder-i386/run.sh
@@ -10,9 +10,19 @@ BUILD_DIR=$DATA_DIR/build
 docker stop "builder-i386" || true
 docker rm "builder-i386" || true
 
+CONFIG_FILE="$BASE_DIR/config.sh"
+PACKET_BUILD_DIR="$BUILD_DIR/packet"
+SCRIPT_BUILD_DIR="$BUILD_DIR/script"
+if [ -f $CONFIG_FILE ]; then
+	source $CONFIG_FILE
+fi
+export PACKET_BUILD_DIR
+mkdir -p $PACKET_BUILD_DIR
+
 docker run -it \
     --name "builder-i386" \
-    -v "$BUILD_DIR:/build" \
+    -v "$PACKET_BUILD_DIR:/build/packet" \
+    -v "$SCRIPT_BUILD_DIR:/build/script" \
     -e PLATFORM=linux-i386 \
     my/builder-i386 \
     /build/script/common/manager.sh "$@"
diff --git a/docker-builder/Dockerfile b/docker-builder/Dockerfile
index 377df11..eb8ca6f 100644
--- a/docker-builder/Dockerfile
+++ b/docker-builder/Dockerfile
@@ -56,3 +56,4 @@ RUN apt-get -yq install libxcb-xinerama0-dev
 RUN apt-get -yq install xsltproc
 RUN apt-get -yq install libudev-dev
 
+CMD mkdir /build
\ No newline at end of file
diff --git a/docker-builder/run.sh b/docker-builder/run.sh
index 55bdabf..64c5f17 100755
--- a/docker-builder/run.sh
+++ b/docker-builder/run.sh
@@ -10,9 +10,19 @@ BUILD_DIR=$DATA_DIR/build
 docker stop "builder" || true
 docker rm "builder" || true
 
+CONFIG_FILE="$BASE_DIR/config.sh"
+PACKET_BUILD_DIR="$BUILD_DIR/packet"
+SCRIPT_BUILD_DIR="$BUILD_DIR/script"
+if [ -f $CONFIG_FILE ]; then
+	source $CONFIG_FILE
+fi
+export PACKET_BUILD_DIR
+mkdir -p $PACKET_BUILD_DIR
+
 docker run -it \
     --name "builder" \
-    -v "$BUILD_DIR:/build" \
+    -v "$PACKET_BUILD_DIR:/build/packet" \
+    -v "$SCRIPT_BUILD_DIR:/build/script" \
     my/builder \
     /build/script/common/manager.sh "$@"
 
diff --git a/run-native.sh b/run-native.sh
index 09ef3f3..51648d3 100755
--- a/run-native.sh
+++ b/run-native.sh
@@ -3,7 +3,15 @@
 SCRIPT_FILE=`realpath "$0"`
 BASE_DIR=`dirname "$SCRIPT_FILE"`
 DATA_DIR="$BASE_DIR/docker-builder-data"
-
 BUILD_DIR=$DATA_DIR/build
 
-$BUILD_DIR/script/common/manager.sh "$@"
+CONFIG_FILE="$BASE_DIR/config.sh"
+PACKET_BUILD_DIR="$BUILD_DIR/packet"
+SCRIPT_BUILD_DIR="$BUILD_DIR/script"
+if [ -f $CONFIG_FILE ]; then
+	source $CONFIG_FILE
+fi
+export PACKET_BUILD_DIR
+mkdir -p $PACKET_BUILD_DIR
+
+$SCRIPT_BUILD_DIR/common/manager.sh "$@"