diff --git a/.idea/MarsCodeWorkspaceAppSettings.xml b/.idea/MarsCodeWorkspaceAppSettings.xml
deleted file mode 100644
index e2a065b..0000000
--- a/.idea/MarsCodeWorkspaceAppSettings.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="com.codeverse.userSettings.MarscodeWorkspaceAppSettingsState">
-    <option name="progress" value="1.0" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 62aadda..4294106 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -11,8 +11,8 @@ ARG PYTHON_VER=3.12
 ARG VENV=/opt/mineru_venv
 ARG TORCH_INDEX=https://download.pytorch.org/whl/rocm7.2
 
-# -- GitHub 访问（国内无镜像，需代理）----------------------------------------
-ARG GIT_PROXY=http://127.0.0.1:8118
+# -- GitHub 访问（国内无镜像，需代理；默认不走代理）-----------------------------
+ARG GIT_PROXY=
 
 # -- 国内镜像 ----------------------------------------------------------------
 ARG PIP_INDEX=https://mirrors.aliyun.com/pypi/simple
@@ -82,13 +82,25 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 # ===========================================================================
 # 阶段 4：CMake 4.0（通过代理下载加速）
 # ===========================================================================
-RUN export http_proxy=${GIT_PROXY} https_proxy=${GIT_PROXY} && \
+RUN set -ex && \
+    CMAKE_TGZ=cmake-4.0.0-linux-x86_64.tar.gz && \
+    CMAKE_DIR=cmake-4.0.0-linux-x86_64 && \
+    CMAKE_URLS="https://github.com/Kitware/CMake/releases/download/v4.0.0/${CMAKE_TGZ} https://ghproxy.com/https://github.com/Kitware/CMake/releases/download/v4.0.0/${CMAKE_TGZ}" && \
+    if [ -n "${GIT_PROXY}" ]; then export http_proxy=${GIT_PROXY} https_proxy=${GIT_PROXY}; fi && \
     cd /tmp && \
-    wget -q https://github.com/Kitware/CMake/releases/download/v4.0.0/cmake-4.0.0-linux-x86_64.tar.gz && \
-    tar -xzf cmake-4.0.0-linux-x86_64.tar.gz && \
-    cp -r cmake-4.0.0-linux-x86_64/bin/* /usr/local/bin/ && \
-    cp -r cmake-4.0.0-linux-x86_64/share/* /usr/local/share/ && \
-    rm -rf cmake-4.0.0-linux-x86_64* && \
+    ok=0; \
+    for url in ${CMAKE_URLS}; do \
+        echo "Downloading CMake from: ${url}"; \
+        if curl -fL --retry 5 --retry-delay 3 --connect-timeout 20 -o ${CMAKE_TGZ} "${url}"; then \
+            ok=1; \
+            break; \
+        fi; \
+    done; \
+    [ "${ok}" = "1" ] || (echo "Failed to download ${CMAKE_TGZ} from all mirrors" && exit 4) && \
+    tar -xzf ${CMAKE_TGZ} && \
+    cp -r ${CMAKE_DIR}/bin/* /usr/local/bin/ && \
+    cp -r ${CMAKE_DIR}/share/* /usr/local/share/ && \
+    rm -rf ${CMAKE_TGZ} ${CMAKE_DIR} && \
     cmake --version
 
 # ===========================================================================
diff --git a/docker/README.md b/docker/README.md
index 93aed3d..cd4b629 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -163,6 +163,7 @@ cp env.example .env
 # 方式一：docker build（直接指定 ARCH）
 docker build \
     --build-arg ARCH=gfx1201 \
+    --build-arg GIT_PROXY= \
     -t mineru-rocm:7.2.1 \
     -f Dockerfile .
 
@@ -186,6 +187,7 @@ docker compose build
 | `PYTHON_VER` | `3.12` | Python 版本 |
 | `VENV` | `/opt/mineru_venv` | 虚拟环境路径 |
 | `TORCH_INDEX` | `https://download.pytorch.org/whl/rocm7.2` | PyTorch wheel 源 |
+| `GIT_PROXY` | 空 | 仅构建时访问 GitHub 用；例如 `http://host.docker.internal:8118` |
 
 ---
 
@@ -446,6 +448,21 @@ docker compose restart gradio
 
 内存不足。将 Dockerfile 中 `ninja -j4` 改为 `ninja -j2` 或 `ninja -j1`，或给 Docker 分配更多内存。
 
+**Q: 构建在 CMake 下载阶段失败（`wget/curl exit code 4`）**
+
+这通常是构建容器无法访问 GitHub，或把 `GIT_PROXY` 设成了容器内不可达地址（例如 `127.0.0.1:8118` 在多数 Docker 场景下指向容器自己，不是宿主机代理）。建议：
+
+1. 不需要代理时，显式传空：`--build-arg GIT_PROXY=`
+2. 需要宿主机代理时，优先用：`http://host.docker.internal:8118`
+3. 先单独测试下载连通性，再完整构建
+
+```bash
+docker build --build-arg GIT_PROXY= -t mineru-rocm:7.2.1 -f Dockerfile .
+
+# 或（宿主机代理）
+docker build --build-arg GIT_PROXY=http://host.docker.internal:8118 -t mineru-rocm:7.2.1 -f Dockerfile .
+```
+
 **Q: 构建时 cmake 报 `Failed to find ROCm root directory`**
 
 `/opt/rocm/bin` 不在 PATH 中。检查 Dockerfile 中 `ENV PATH` 是否正确设置。
diff --git a/docker/env.example b/docker/env.example
index a36a49f..0baec63 100644
--- a/docker/env.example
+++ b/docker/env.example
@@ -9,6 +9,10 @@
 # gfx1030 = RX 6950 / 6900 / 6800 系列
 ARCH=gfx1201
 
+# ---- 可选：构建阶段 GitHub 下载代理（不需要可留空）----
+# 示例: GIT_PROXY=http://host.docker.internal:8118
+GIT_PROXY=
+
 # ---- 目录挂载 ----
 INPUT_DIR=./data/input
 OUTPUT_DIR=./data/output