test(integration): make container tests pass + add baseline snapshots

Three fixes needed to get the container-image integration tests
deploying and invoking against real AWS-stock RIC:

- Container Dockerfiles previously installed only the
  datadog-lambda-js tarball, which doesn't pull dd-trace because
  it's a devDep of the package. Add dd-trace as a direct dependency
  in each container test's package.json, pinned to 5.105.0 to
  match the version yarn.lock resolves for the layer build.
- Run `npm install --omit=dev` before installing the tarball so
  package.json deps are picked up.
- Export BUILDX_NO_DEFAULT_ATTESTATIONS=1 in run_integration_tests.sh.
  Modern Docker buildx attaches provenance attestations by default,
  which produce OCI index manifests that AWS Lambda rejects with
  "image manifest ... media type ... not supported." Disabling the
  default attestations makes buildx emit Docker v2 manifests Lambda
  accepts.

Plus baseline snapshots for `container-{cjs,esm}_node{18,20,22,24}`
across 9 input events (72 return-value + 8 log files). Each
container handler returns `{"message":"hello, dog!"}` end-to-end
through `dist/handler.handler`, proving CJS and ESM user code load
correctly on AWS-stock RIC for every supported Node major.

Author: duncanista

integration_tests/container/cjs/Dockerfile

@@ -3,7 +3,9 @@ FROM public.ecr.aws/lambda/nodejs:${NODE_VERSION}
 
 COPY package.json handler.js ${LAMBDA_TASK_ROOT}/
 COPY datadog-lambda-js-local.tgz /tmp/datadog-lambda-js-local.tgz
-RUN cd ${LAMBDA_TASK_ROOT} && npm install /tmp/datadog-lambda-js-local.tgz \
+RUN cd ${LAMBDA_TASK_ROOT} \
+    && npm install --omit=dev \
+    && npm install --no-save /tmp/datadog-lambda-js-local.tgz \
     && rm /tmp/datadog-lambda-js-local.tgz
 
 CMD ["node_modules/datadog-lambda-js/dist/handler.handler"]

integration_tests/container/cjs/package.json

@@ -1,5 +1,8 @@
 {
   "name": "container-cjs-test",
   "version": "1.0.0",
-  "private": true
+  "private": true,
+  "dependencies": {
+    "dd-trace": "5.105.0"
+  }
 }

integration_tests/container/esm/Dockerfile

@@ -3,7 +3,9 @@ FROM public.ecr.aws/lambda/nodejs:${NODE_VERSION}
 
 COPY package.json handler.mjs ${LAMBDA_TASK_ROOT}/
 COPY datadog-lambda-js-local.tgz /tmp/datadog-lambda-js-local.tgz
-RUN cd ${LAMBDA_TASK_ROOT} && npm install /tmp/datadog-lambda-js-local.tgz \
+RUN cd ${LAMBDA_TASK_ROOT} \
+    && npm install --omit=dev \
+    && npm install --no-save /tmp/datadog-lambda-js-local.tgz \
     && rm /tmp/datadog-lambda-js-local.tgz
 
 CMD ["node_modules/datadog-lambda-js/dist/handler.handler"]

integration_tests/container/esm/package.json

@@ -2,5 +2,8 @@
   "name": "container-esm-test",
   "version": "1.0.0",
   "private": true,
-  "type": "module"
+  "type": "module",
+  "dependencies": {
+    "dd-trace": "5.105.0"
+  }
 }