'Add new script' (#4766)

Co-authored-by: push-app-to-main[bot] <203845782+push-app-to-main[bot]@users.noreply.github.com>

ct/backrest.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
+# Copyright (c) 2021-2025 community-scripts ORG
+# Author: ksad (enirys31)
+# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+# Source: https://garethgeorge.github.io/backrest/
+
+APP="Backrest"
+var_tags="${var_tags:-backup}"
+var_cpu="${var_cpu:-1}"
+var_ram="${var_ram:-512}"
+var_disk="${var_disk:-8}"
+var_os="${var_os:-debian}"
+var_version="${var_version:-12}"
+var_unprivileged="${var_unprivileged:-1}"
+
+header_info "$APP"
+variables
+color
+catch_errors
+
+function update_script() {
+  header_info
+  check_container_storage
+  check_container_resources
+  if [[ ! -d /opt/backrest ]]; then
+    msg_error "No ${APP} Installation Found!"
+    exit
+  fi
+  RELEASE=$(curl -fsSL https://api.github.com/repos/garethgeorge/backrest/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4) }')
+  if [[ ! -f /opt/${APP}_version.txt ]] || [[ "${RELEASE}" != "$(cat /opt/${APP}_version.txt)" ]]; then
+    msg_info "Stopping ${APP}"
+    systemctl stop backrest
+    msg_ok "Stopped ${APP}"
+
+    msg_info "Updating ${APP} to ${RELEASE}"
+    temp_file=$(mktemp)
+    rm -f /opt/backrest/bin/backrest
+    curl -fsSL "https://github.com/garethgeorge/backrest/releases/download/v${RELEASE}/backrest_Linux_x86_64.tar.gz" -o "$temp_file"
+    tar xzf $temp_file -C /opt/backrest/bin
+    chmod +x /opt/backrest/bin/backrest
+    echo "${RELEASE}" >/opt/${APP}_version.txt
+    msg_ok "Updated ${APP} to ${RELEASE}"
+
+    msg_info "Starting ${APP}"
+    systemctl start backrest
+    msg_ok "Started ${APP}"
+
+    msg_info "Cleaning up"
+    rm -f "$temp_file"
+    msg_ok "Cleaned up"
+    msg_ok "Updated Successfully"
+  else
+    msg_ok "No update required. ${APP} is already at ${RELEASE}"
+  fi
+  exit
+}
+
+start
+build_container
+description
+
+msg_ok "Completed Successfully!\n"
+echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
+echo -e "${INFO}${YW} Access it using the following URL:${CL}"
+echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:9898${CL}"