diff --git a/packaging/docker/Dockerfile b/packaging/docker/Dockerfile
index b4497e210f..0f138be4d4 100644
--- a/packaging/docker/Dockerfile
+++ b/packaging/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM centos:7
+FROM ubuntu:16
 
 WORKDIR /root
 
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index d55be5b8c0..b0d8d8983b 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -1,6 +1,6 @@
 name: tdengine
 base: core18
-version: 'RELEASE_VERSION'
+version: '2.0.5.1'
 icon: snap/gui/t-dengine.svg
 summary: an open-source big data platform designed and optimized for IoT. 
 description: |
@@ -72,7 +72,7 @@ parts:
       - usr/bin/taosd
       - usr/bin/taos
       - usr/bin/taosdemo
-      - usr/lib/libtaos.so.RELEASE_VERSION
+      - usr/lib/libtaos.so.2.0.5.1
       - usr/lib/libtaos.so.1
       - usr/lib/libtaos.so
 
diff --git a/src/os/src/linux/CMakeLists.txt b/src/os/src/linux/CMakeLists.txt
index 752326cc1d..b1a7ebf54e 100644
--- a/src/os/src/linux/CMakeLists.txt
+++ b/src/os/src/linux/CMakeLists.txt
@@ -4,4 +4,4 @@ PROJECT(TDengine)
 AUX_SOURCE_DIRECTORY(. SRC)
 
 ADD_LIBRARY(os ${SRC})
-TARGET_LINK_LIBRARIES(os m rt)
+TARGET_LINK_LIBRARIES(os m rt z)