Print docker container logs in webapp test. (#649)

stack_orchestrator/data/container-build/cerc-nextjs-base/scripts/start-serving-app.sh

@@ -39,17 +39,12 @@ if [ "$CERC_NEXTJS_SKIP_GENERATE" != "true" ]; then
 
     count=0
     generate_done="false"
-    while [ $count -lt $CERC_MAX_GENERATE_TIME ]; do
+    while [ $count -lt $CERC_MAX_GENERATE_TIME ] && [ "$generate_done" == "false" ]; do
       sleep 1
+      count=$((count + 1))
       grep 'rendered as static HTML' gen.out > /dev/null
       if [ $? -eq 0 ]; then
         generate_done="true"
-        ps -ef | grep 'node' | grep 'next' | grep 'generate' >/dev/null
-        if [ $? -ne 0 ]; then
-          break
-        fi
-      else
-        count=$((count + 1))
       fi
     done