ci: use upstream docker build script for cereal validation (commaai#1136)

Author: sunnyhaibin

.github/workflows/cereal_validation.yaml

@@ -21,8 +21,8 @@ concurrency:
 
 env:
   PYTHONWARNINGS: error
-  BASE_IMAGE: sunnypilot-base
-  BUILD: release/ci/docker_build_sp.sh base
+  BASE_IMAGE: openpilot-base
+  BUILD: selfdrive/test/docker_build.sh base
   RUN: docker run --shm-size 2G -v $PWD:/tmp/openpilot -w /tmp/openpilot -e CI=1 -e PYTHONWARNINGS=error -e FILEREADER_CACHE=1 -e PYTHONPATH=/tmp/openpilot -e NUM_JOBS -e JOB_ID -e GITHUB_ACTION -e GITHUB_REF -e GITHUB_HEAD_REF -e GITHUB_SHA -e GITHUB_REPOSITORY -e GITHUB_RUN_ID -v $GITHUB_WORKSPACE/.ci_cache/scons_cache:/tmp/scons_cache -v $GITHUB_WORKSPACE/.ci_cache/comma_download_cache:/tmp/comma_download_cache -v $GITHUB_WORKSPACE/.ci_cache/openpilot_cache:/tmp/openpilot_cache $BASE_IMAGE /bin/bash -c
 
 jobs: