fix immediate exit issue when version check is not successful

scripts/publish.sh

@@ -355,15 +355,18 @@ verify_ecr() {
 
 check_image_version() {
 	export DOCKER_CLI_EXPERIMENTAL=enabled
+	EXIT_CODE=0
 
 	docker_hub_login
 
 	# check if we can get the image information in dockerhub; if yes, the exit status should be 0
-	docker manifest inspect amazon/aws-for-fluent-bit:${1} > /dev/null
-	if [ "$?" = "0" ]; then
+	docker manifest inspect amazon/aws-for-fluent-bit:${1} > /dev/null || EXIT_CODE=$?
+	if [ "${EXIT_CODE}" = "0" ]; then
 		echo "Accidental release: current image version from github source file match a previous version from dockerhub."
 		exit 1
 	fi
+
+	echo "Approved release: release the image with a new version."
 }
 
 verify_ecr_image_scan() {