diff --git a/Dockerfile b/Dockerfile
index 3089bac..9c18554 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,17 +1,23 @@
 FROM alpine:latest
 WORKDIR /app
 
-# 设置环境变量
+# 设置环境变量默认值
 ENV UDP_PORT=20000
 
+# 安装依赖 & 创建必要目录
+RUN apk update && \
+    apk add --no-cache curl wget openssl bash jq unzip ca-certificates && \
+    mkdir -p /etc/hysteria
+
 # 下载 hysteria2 主程序
 RUN wget -q -O /usr/local/bin/hysteria https://download.hysteria.network/app/latest/hysteria-linux-amd64 && \
     chmod +x /usr/local/bin/hysteria
 
 # 自签 TLS 证书
-RUN openssl ecparam -name prime256v1 -genkey -noout -out /etc/hysteria/server.key && \
-    openssl req -x509 -new -nodes -key /etc/hysteria/server.key \
-    -out /etc/hysteria/server.crt -subj "/CN=bing.com" -days 36500
+RUN openssl req -x509 -nodes -newkey ec:<(openssl ecparam -name prime256v1) \
+    -keyout /etc/hysteria/server.key \
+    -out /etc/hysteria/server.crt \
+    -subj "/CN=bing.com" -days 36500
 
 # 拷贝 entrypoint 启动脚本
 COPY entrypoint.sh /entrypoint.sh