diff --git a/bin/docker-start-master.sh b/bin/docker-start-master.sh
index 0d353a6b..32b33cd4 100755
--- a/bin/docker-start-master.sh
+++ b/bin/docker-start-master.sh
@@ -1,28 +1,23 @@
-# replace base url
-if [ "${CRAWLAB_BASE_URL}" = "" ];
-then
+# replace env
+indexpath=/app/dist/index.html
+if test -z "$CRAWLAB_BASE_URL"; then
 	:
 else
-	indexpath=/app/dist/index.html
-	if test -z "$CRAWLAB_BASE_URL"; then
-		:
-	else
-		sed -i "s?/js/?${CRAWLAB_BASE_URL}/js/?g" ${indexpath}
-		sed -i "s?/css/?${CRAWLAB_BASE_URL}/css/?g" ${indexpath}
-		sed -i "s/  <link rel=\"icon\" type=\"image\/x-icon\" href=\"/  <link rel=\"icon\" type=\"image\/x-icon\" href=\"\/${CRAWLAB_BASE_URL}/g"  ${indexpath}
-		sed -i "s/  <link rel=\"stylesheet\" href=\"/  <link rel=\"stylesheet\" href=\"${CRAWLAB_BASE_URL}\//g"  ${indexpath}
-		sed -i "s/  window.VUE_APP_API_BASE_URL = '/  window.VUE_APP_API_BASE_URL = '\/${CRAWLAB_BASE_URL}/g" ${indexpath}
-	fi
-	if test -z "$CRAWLAB_INIT_BAIDU_TONGJI"; then
-		:
-	else
-		sed -i "s/  window.VUE_APP_INIT_BAIDU_TONGJI =/  window.VUE_APP_INIT_BAIDU_TONGJI = '${CRAWLAB_INIT_BAIDU_TONGJI}'/g" ${indexpath}
-	fi
-	if test -z "$CRAWLAB_INIT_UMENG"; then
-		:
-	else
-		sed -i "s/  window.VUE_APP_INIT_UMENG =/  window.VUE_APP_INIT_UMENG = '${CRAWLAB_INIT_UMENG}'/g" ${indexpath}
-	fi
+	sed -i "s?/js/?${CRAWLAB_BASE_URL}/js/?g" ${indexpath}
+	sed -i "s?/css/?${CRAWLAB_BASE_URL}/css/?g" ${indexpath}
+	sed -i "s/  <link rel=\"icon\" type=\"image\/x-icon\" href=\"/  <link rel=\"icon\" type=\"image\/x-icon\" href=\"\/${CRAWLAB_BASE_URL}/g"  ${indexpath}
+	sed -i "s/  <link rel=\"stylesheet\" href=\"/  <link rel=\"stylesheet\" href=\"${CRAWLAB_BASE_URL}\//g"  ${indexpath}
+	sed -i "s/  window.VUE_APP_API_BASE_URL = '/  window.VUE_APP_API_BASE_URL = '\/${CRAWLAB_BASE_URL}/g" ${indexpath}
+fi
+if test -z "$CRAWLAB_INIT_BAIDU_TONGJI"; then
+	:
+else
+	sed -i "s/  window.VUE_APP_INIT_BAIDU_TONGJI =/  window.VUE_APP_INIT_BAIDU_TONGJI = '${CRAWLAB_INIT_BAIDU_TONGJI}'/g" ${indexpath}
+fi
+if test -z "$CRAWLAB_INIT_UMENG"; then
+	:
+else
+	sed -i "s/  window.VUE_APP_INIT_UMENG =/  window.VUE_APP_INIT_UMENG = '${CRAWLAB_INIT_UMENG}'/g" ${indexpath}
 fi
 
 # start nginx