Add pull of base image before building the image

.gitlab-ci.yml

@@ -17,7 +17,7 @@ build:
   stage: build
   script:
     - docker pull $CI_REGISTRY_IMAGE || true
-    - docker build --cache-from $CI_REGISTRY_IMAGE --tag $CI_REGISTRY_IMAGE:latest --build-arg http_proxy=${http_proxy} --build-arg https_proxy=${http_proxy} .
+    - docker build --pull --cache-from $CI_REGISTRY_IMAGE --tag $CI_REGISTRY_IMAGE:latest --build-arg http_proxy=${http_proxy} --build-arg https_proxy=${http_proxy} .
     - docker push $CI_REGISTRY_IMAGE
 
 test: