kokoro: use lightweight license-checker image (#143)

BUG=393622588

Author: dneto0

kokoro/license-check/presubmit.sh kokoro/license-check/build.shkokoro/license-check/presubmit.sh renamed to kokoro/license-check/build.sh

@@ -20,8 +20,6 @@ SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd )"
 ROOT_DIR="$( cd "${SCRIPT_DIR}/../.." >/dev/null 2>&1 && pwd )"
 
 docker run --rm -i \
-  --volume "${ROOT_DIR}:${ROOT_DIR}" \
-  --volume "${KOKORO_ARTIFACTS_DIR}:/mnt/artifacts" \
+  --volume "${ROOT_DIR}:${ROOT_DIR}:ro" \
   --workdir "${ROOT_DIR}" \
-  --entrypoint "${SCRIPT_DIR}/presubmit-docker.sh" \
-  "gcr.io/shaderc-build/radial-build:latest"
+  us-east4-docker.pkg.dev/shaderc-build/radial-docker/ubuntu-24.04-amd64/license-checker

kokoro/license-check/presubmit-docker.sh

@@ -1,4 +1,4 @@
 # Format: //devtools/kokoro/config/proto/build.proto
 
-build_file: "cppdap/kokoro/license-check/presubmit.sh"
+build_file: "cppdap/kokoro/license-check/build.sh"