copy factory app_init.sh to allow user modifications

SD_ROOT/wz_mini/etc/init.d/v3_init.sh

@@ -124,6 +124,13 @@ sed -i '/system\/\lib/s/$/:\/opt\/wz_mini\/lib/' /opt/wz_mini/tmp/.storage/rcS
 #sed -i '/^# Run init script.*/i#Hook Library PATH here\nexport LD_LIBRARY_PATH=/tmp/test/lib:$LD_LIBRARY_PATH\n' /opt/wz_mini/tmp/.storage/rcS
 #sed -i '/^# Run init script.*/i#Hook system PATH here\nexport PATH=/tmp/test/bin:$PATH\n' /opt/wz_mini/tmp/.storage/rcS
 
+echo "Copy factory app_init.sh"
+cp /system/init/app_init.sh /opt/wz_mini/tmp/.storage/app_init.sh
+
+echo "Replace factory app_init.sh path"
+sed -i '/Run init script.*/a /opt/wz_mini/tmp/.storage/app_init.sh' /opt/wz_mini/tmp/.storage/rcS
+sed -i '/\/system\/init\/app_init.sh/,+2d' /opt/wz_mini/tmp/.storage/rcS
+
 echo "replace stock password"
 cp /opt/wz_mini/etc/shadow /opt/wz_mini/tmp/.storage/shadow