diff --git a/entrypoint.sh b/entrypoint.sh
index 117347c..5e8a1ce 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,23 +1,60 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-echo "=================================================="
+set -euo pipefail
 
-echo "參數檢查"
+readonly BORDER='=================================================='
+readonly DIVIDER='--------------------------------------------------'
 
-echo "--------------------------------------------------"
+log_section() {
+  printf '%s\n%s\n%s\n' "$BORDER" "$1" "$DIVIDER"
+}
 
-# 顯示 RELEASE_VERSION 參數，並檢查是否為空或 "null"，如果是則輸出錯誤訊息並退出
-echo "RELEASE_VERSION=$RELEASE_VERSION" && ([ -z "$RELEASE_VERSION" ] || [ "$RELEASE_VERSION" = "null" ]) && exit 1
+log_kv() {
+  printf '%-16s %s\n' "$1" "$2"
+}
 
-# 顯示 RELEASE_FOLDER 參數，並檢查是否為空或 "null"，如果是則輸出錯誤訊息並退出
-echo "RELEASE_FOLDER=$RELEASE_FOLDER" && ([ -z "$RELEASE_FOLDER" ] || [ "$RELEASE_FOLDER" = "null" ]) && exit 1
+fail() {
+  printf '錯誤: %s\n' "$1" >&2
+  exit 1
+}
 
-echo "=================================================="
+require_value() {
+  local name="$1"
+  local value="${2:-}"
 
-echo "壓縮檔案"
+  log_kv "$name" "$value"
 
-echo "--------------------------------------------------"
+  if [[ -z "$value" || "$value" == "null" ]]; then
+    fail "$name 不能為空"
+  fi
+}
 
-zip -r "$(basename "$PWD").$RELEASE_VERSION.zip" $RELEASE_FOLDER/*
+log_section '參數檢查'
+require_value 'RELEASE_VERSION' "${RELEASE_VERSION:-}"
+require_value 'RELEASE_FOLDER' "${RELEASE_FOLDER:-}"
 
-echo "=================================================="
\ No newline at end of file
+if [[ ! -d "$RELEASE_FOLDER" ]]; then
+  fail "找不到資料夾: $RELEASE_FOLDER"
+fi
+
+if ! command -v zip >/dev/null 2>&1; then
+  fail '找不到 zip 指令，請確認映像檔已安裝 zip'
+fi
+
+archive_name="$(basename "$PWD").${RELEASE_VERSION}.zip"
+archive_path="$PWD/$archive_name"
+file_count="$(find "$RELEASE_FOLDER" -type f | wc -l | tr -d ' ')"
+
+log_section '壓縮檔案'
+log_kv '來源資料夾' "$RELEASE_FOLDER"
+log_kv '檔案數量' "$file_count"
+log_kv '輸出檔案' "$archive_name"
+
+(
+  cd "$RELEASE_FOLDER"
+  zip -qr "$archive_path" .
+)
+
+log_kv '狀態' '壓縮完成'
+log_kv '檔案位置' "$archive_path"
+printf '%s\n' "$BORDER"