fix: throttling issue

Author: maxday

.github/workflows/runtime-interface-client_pr.yml

@@ -136,6 +136,15 @@ jobs:
               platform: linux/arm64/v8
     name: "integration-test (${{ matrix.buildspec }} / ${{ matrix.arch.label }})"
     steps:
+    - name: Jitter start (stagger matrix shards to spare public.ecr.aws rate limit)
+      # Every shard is scheduled within milliseconds of the others and hits
+      # public.ecr.aws / docker hub inside the same rate-limit window, so they
+      # collectively trip the throttle.
+      run: |
+        jitter=$((RANDOM % 61))
+        echo "Sleeping ${jitter}s to stagger this shard"
+        sleep "${jitter}"
+
     - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
     - name: Set up Docker Buildx

aws-lambda-java-runtime-interface-client/test/integration/codebuild-local/test_one.sh

@@ -62,7 +62,10 @@ main() {
     mkdir -p "$ARTIFACTS_DIR"
 
     LOCAL_AGENT_IMAGE="$(get_local_agent_image)"
-    "$(dirname "$0")"/docker-retry.sh docker pull "$LOCAL_AGENT_IMAGE" || true
+
+    if ! docker image inspect "$LOCAL_AGENT_IMAGE" >/dev/null 2>&1; then
+        "$(dirname "$0")"/docker-retry.sh docker pull "$LOCAL_AGENT_IMAGE"
+    fi
 
     # Run CodeBuild local agent.
     "$(dirname "$0")"/codebuild_build.sh \