diff --git a/Dockerfile b/Dockerfile
index 7f2c34d..b2e637f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
 FROM php:8.2-fpm
 
 # 1. 安裝系統套件（這層幾乎不變，永遠快取）
-RUN apt-get update && apt-get install -y libpq-dev \
-    && docker-php-ext-install pdo pdo_pgsql \
+RUN apt-get update && apt-get install -y \
+    libpq-dev \
     git \
     curl \
     libpng-dev \
@@ -10,7 +10,9 @@ RUN apt-get update && apt-get install -y libpq-dev \
     libxml2-dev \
     zip \
     unzip \
-    && docker-php-ext-install pdo_mysql mbstring exif pcntl bcmath gd
+    && rm -rf /var/lib/apt/lists/*
+
+RUN docker-php-ext-install pdo pdo_pgsql pdo_mysql mbstring exif pcntl bcmath gd
 
 COPY --from=composer:latest /usr/bin/composer /usr/bin/composer