fix: fix validation test stuck issue

Signed-off-by: Phoeniix Zhao <[email protected]>

scripts/common.sh

@@ -13,7 +13,7 @@ function common::run_container() {
     docker run -d -it --rm --name=node${ith} --net=xline_net \
             --ip=${SERVERS[$ith]} --cap-add=NET_ADMIN --cpu-shares=1024 \
             -m=512M -v ${DIR}:/mnt ${XLINE_IMAGE} bash &
-    wait
+    wait $!
     log::info container node${ith} started
 }
 
@@ -24,7 +24,7 @@ function common::stop_container() {
     if [ -n "$docker_id" ]; then
         docker stop $docker_id
     fi
-    wait
+    wait $!
     log::info container ${image_name} stopped
 }
 
@@ -34,7 +34,7 @@ function common::run_etcd_client() {
     docker run -d -it --rm  --name=client \
         --net=xline_net --ip=${SERVERS[0]} --cap-add=NET_ADMIN \
         --cpu-shares=1024 -m=512M -v ${DIR}:/mnt ${ETCDCTL_IMAGE} bash &
-    wait
+    wait $!
     log::info container etcdctl started
 }