fix gitlab ci

.gitlab-ci.yml

@@ -18,6 +18,10 @@ check:prebuilt:
         - pre-commit install
         - ./paddle/fluid/lite/tools/build.sh check_style
         #- ./paddle/fluid/lite/tools/build.sh check_need_ci
+    cache:
+        key: check_style
+        paths:
+            - /root/.cache
 
 build:server:
     image: $SERVER_LITE_DOCKER_IMAGE
@@ -27,8 +31,10 @@ build:server:
         paths:
             - build/third_party
     script:
-        - export http_proxy=http://172.19.57.45:3128
-        - export https_proxy=http://172.19.57.45:3128
+        #- export http_proxy=http://172.19.57.45:3128
+        #- export https_proxy=http://172.19.57.45:3128
+        - export http_proxy=http://agent.baidu.com:8118
+        - export https_proxy=http://agent.baidu.com:8118
         - mkdir -p build
         - cd build
         - ../paddle/fluid/lite/tools/build.sh cmake_x86