fix(build): make example test script compatible with container build targets

run.mk

@@ -32,11 +32,13 @@ test-rules: build-bundle
 			--tag salty-dog > /dev/null || exit 1; \
 	done
 
+DOCKER_OPTIONS ?=
+
 local-alpine:
-	docker run --rm -v "$(shell pwd):/salty-dog" -w /salty-dog node:16-stretch make ci
+	docker run $(DOCKER_OPTIONS) --rm -v "$(shell pwd):/salty-dog" -w /salty-dog node:16-alpine sh -c "apk add build-base git && make ci"
 
 local-stretch:
-	docker run --rm -v "$(shell pwd):/salty-dog" -w /salty-dog node:16-alpine sh -c "apk add build-base git && make ci"
+	docker run $(DOCKER_OPTIONS) --rm -v "$(shell pwd):/salty-dog" -w /salty-dog node:16-stretch bash -c "make ci"
 
 local-chown-leaks: ## clean up root-owned files the containers may leak
 	sudo chown -R ${USER}:${USER} $(ROOT_PATH)

scripts/ci-project-path.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /bin/sh
 
 PROJECT="${ROOT_PATH}"
 PARENT="$(dirname "${PROJECT}")"

scripts/test-examples.sh

@@ -35,8 +35,9 @@ do
     2> ${STDERR_PATH}
 
   ACTUAL_STATUS=$?
+  echo "Test status: ${ACTUAL_STATUS}"
 
-  if [[ -s ${STDOUT_PATH} ]];
+  if [ -s ${STDOUT_PATH} ];
   then
     echo "Test output:"
     echo "==="
@@ -46,7 +47,7 @@ do
     echo "==="
   fi
 
-  if [[ -s ${STDERR_PATH} ]];
+  if [ -s ${STDERR_PATH} ];
   then
     echo "Test errors:"
     echo "==="
@@ -56,8 +57,6 @@ do
     echo "==="
   fi
 
-  echo "Test status: ${ACTUAL_STATUS}"
-
   if [ "${ACTUAL_STATUS}" != "${EXPECTED_STATUS}" ];
   then
     echo "Exit status does not match! (expected ${EXPECTED_STATUS}, got ${ACTUAL_STATUS})"