improve cleanup handling & fix CI

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: bazelbuild/setup-bazelisk@95c9bf48d0c570bb3e28e57108f3450cd67c1a44 # v2.0.0
+      - uses: bazel-contrib/setup-bazel@0.18.0
       - run: bazel build //...
       - run: cd examples && bazel build //...
       - run: cd examples && bazel test //...

docker_compose_test/docker_compose_test.sh

@@ -53,12 +53,29 @@ if [ $? -eq 0 ]; then
     docker_compose_bin="docker-compose"
 fi
 
-# bring up compose file & get exit status-code from the integration test container
+cleanup() {
+    echo "Cleaning up docker-compose resources..."
+    docker_compose_down_cmd="$docker_compose_bin -f $ABSOLUTE_COMPOSE_FILE_PATH down --volumes --remove-orphans"
+    echo "running: $docker_compose_down_cmd"
+    echo "$docker_compose_down_cmd" | bash
+}
+
+# Ensure cleanup runs on EXIT (covers normal exit, errors, and signals).
+# SIGTERM: sent by Bazel on test timeout or cancellation.
+# SIGINT: sent on Ctrl+C.
+trap cleanup EXIT
+
+# bring up compose file & get exit status-code from the integration test container.
 docker_compose_up_cmd="$docker_compose_bin -f $ABSOLUTE_COMPOSE_FILE_PATH up --exit-code-from $DOCKER_COMPOSE_TEST_CONTAINER $EXTRA_DOCKER_COMPOSE_UP_ARGS"
 echo "running: $docker_compose_up_cmd"
 echo "$docker_compose_up_cmd" | bash
 result=$?
 
-$docker_compose_bin -f $ABSOLUTE_COMPOSE_FILE_PATH down
+# Figure out the exit code of the test container incase it never actually started.
+EXIT_CODE=$(docker inspect $(docker compose -f $ABSOLUTE_COMPOSE_FILE_PATH ps -qa $DOCKER_COMPOSE_TEST_CONTAINER) --format='{{.State.ExitCode}}' 2>/dev/null)
+if [ "$EXIT_CODE" != "0" ] || [ -z "$EXIT_CODE" ]; then
+  echo "Error: $DOCKER_COMPOSE_TEST_CONTAINER container failed or never started!"
+  exit 1
+fi
 
 exit $result