diff --git a/Dockerfile b/Dockerfile
index 6b357ad..2b5ab23 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,8 +6,12 @@ FROM node:16-bullseye
 RUN sed -i 's|http://deb.debian.org/debian|http://mirrors.aliyun.com/debian|g' /etc/apt/sources.list && \
     sed -i 's|http://deb.debian.org/debian-security|http://mirrors.aliyun.com/debian-security|g' /etc/apt/sources.list && \
     apt-get update && apt-get install -y openssl libssl-dev musl-tools
-RUN export RUSTUP_DIST_SERVER="https://rsproxy.cn" && export RUSTUP_UPDATE_ROOT="https://rsproxy.cn/rustup" && \
-    curl --proto '=https' --tlsv1.2 -sSf https://rsproxy.cn/rustup-init.sh | sh -s -- -y
+
+# 设置 RUSTUP_DIST_SERVER 和 RUSTUP_UPDATE_ROOT 环境变量
+ENV RUSTUP_DIST_SERVER=https://rsproxy.cn
+ENV RUSTUP_UPDATE_ROOT=https://rsproxy.cn/rustup
+# 安装 Rust 工具链
+RUN curl --proto '=https' --tlsv1.2 -sSf https://rsproxy.cn/rustup-init.sh | sh -s -- -y
 ENV PATH="/root/.cargo/bin:${PATH}"
 RUN rustup target add x86_64-unknown-linux-musl