add manage offline files script (#8956)

Signed-off-by: bo.jiang <bo.jiang@daocloud.io>

contrib/offline/manage-offline-files.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+CURRENT_DIR=$(cd $(dirname $0); pwd)
+OFFLINE_FILES_DIR="${CURRENT_DIR}/offline-files"
+FILES_LIST=${FILES_LIST:-"${CURRENT_DIR}/temp/files.list"}
+NGINX_PORT=8080
+
+# download files
+if [ ! -f ${FILES_LIST} ]; then
+    echo "${FILES_LIST} should exist."
+    exit 1
+fi
+rm -rf ${OFFLINE_FILES_DIR}
+mkdir  ${OFFLINE_FILES_DIR}
+wget -x -P ${OFFLINE_FILES_DIR} -i ${FILES_LIST}
+
+# run nginx container server
+if command -v nerdctl 1>/dev/null 2>&1; then
+    runtime="nerdctl"
+elif command -v podman 1>/dev/null 2>&1; then
+    runtime="podman"
+elif command -v docker 1>/dev/null 2>&1; then
+    runtime="docker"
+else
+    echo "No supported container runtime found"
+    exit 1
+fi
+sudo "${runtime}" container inspect nginx >/dev/null 2>&1
+if [ $? -ne 0 ]; then
+    sudo "${runtime}" run \
+        --restart=always -d -p ${NGINX_PORT}:80 \
+        --volume ${OFFLINE_FILES_DIR}:/usr/share/nginx/html/download \
+        --volume "$(pwd)"/nginx.conf:/etc/nginx/nginx.conf \
+        --name nginx nginx:alpine
+fi