diff --git a/bin/lib.sh b/bin/lib.sh
index e796e082..d2c2c271 100644
--- a/bin/lib.sh
+++ b/bin/lib.sh
@@ -106,45 +106,18 @@ remove_all_but_latest()
   docker system prune --force
 }
 
-exit_non_zero_unless_started_cleanly()
+echo_warnings()
 {
+  local -r SERVICE_NAME="${1}" # {client|server}
+  local -r DOCKER_LOG=$(docker logs "${CONTAINER_NAME}" 2>&1)
   # Handle known warnings (eg waiting on Gem upgrade)
   # local -r SHADOW_WARNING="server.rb:(.*): warning: shadowing outer local variable - filename"
   # DOCKER_LOG=$(strip_known_warning "${DOCKER_LOG}" "${SHADOW_WARNING}")
-  local -r SERVICE_NAME="${1}"
-  echo
-  echo "Checking if ${SERVICE_NAME} started cleanly."
-  if [ "$(top_5)" != "$(clean_top_5)" ]; then
-    echo "${SERVICE_NAME} did not start cleanly: docker log..."
-    echo 'expected------------------'
-    echo "$(clean_top_5)"
-    echo
-    echo 'actual--------------------'
-    echo "$(top_5)"
-    echo
-    echo 'diff--------------------'
-    grep -Fxvf <(clean_top_5) <(top_5)
-    echo
-    exit 42
-  fi
-}
-
-top_5()
-{
-  docker logs "${CONTAINER_NAME}" 2>&1 | head -5
-}
 
-clean_top_5()
-{
-  # 1st 5 lines on Puma
-  local -r L1="Puma starting in single mode..."
-  local -r L2='* Puma version: 6.5.0 ("Sky'"'"'s Version")'
-  local -r L3='* Ruby version: ruby 3.3.6 (2024-11-05 revision 75015d4c1f) [x86_64-linux-musl]'
-  local -r L4="*  Min threads: 0"
-  local -r L5="*  Max threads: 5"
-  #
-  local -r all5="$(printf "%s\n%s\n%s\n%s\n%s" "${L1}" "${L2}" "${L3}" "${L4}" "${L5}")"
-  echo "${all5}"
+  if echo "${DOCKER_LOG}" | grep --quiet "warning" ; then
+    echo "Warnings in ${SERVICE_NAME} container"
+    echo "${DOCKER_LOG}"
+  fi
 }
 
 strip_known_warning()
diff --git a/bin/run_tests.sh b/bin/run_tests.sh
index d2a8f112..7a19efbe 100755
--- a/bin/run_tests.sh
+++ b/bin/run_tests.sh
@@ -17,8 +17,8 @@ show_help()
     Use: ${MY_NAME} {server|client} [ID...]
 
     Options:
-       server  - only run tests from inside the server (local only)
-       client  - only run tests from inside the client (local and CI workflow)
+       server  - only run tests from inside the server
+       client  - only run tests from inside the client
        ID...   - only run tests matching these identifiers
 
     To see the test ID and filename as each test runs:
@@ -110,11 +110,13 @@ run_tests_in_container()
 run_tests()
 {
   check_args "$@"
+  local -r TYPE="${1}" # {server|client}
   containers_down
   setup_dependent_images "$@"
   create_test_data_manifests_file
-  docker compose --progress=plain up --no-build --wait --wait-timeout=10 "${1}"
-  exit_non_zero_unless_started_cleanly "${1}"
+  # Don't do a build here, because in CI workflow, server image is built with GitHub Action
+  docker compose --progress=plain up --no-build --wait --wait-timeout=10 "${TYPE}"
+  echo_warnings "${TYPE}"
   run_tests_in_container "$@"
 }