diff --git a/docker/Dockerfile.ubuntu b/docker/Dockerfile.ubuntu
index eca3235..44cb415 100644
--- a/docker/Dockerfile.ubuntu
+++ b/docker/Dockerfile.ubuntu
@@ -1,4 +1,4 @@
-FROM ubuntu:22.04 AS base
+FROM ubuntu:20.04 AS base
 
 ARG TARGETARCH
 ARG BUILDPLATFORM
@@ -59,25 +59,25 @@ COPY ./init.sh ./init.sh
 
 RUN chmod +x ./init.sh && ./init.sh
 
-# 构建 Monero (mond) - 使用官方 release-static 方法
+# 使用官方 depends 系统构建静态依赖（参考 .source/Dockerfile）
 RUN if [ "$BUILDPLATFORM" != "$TARGETPLATFORM" ]; then \
-        MAKE_JOBS="-j2"; \
+        MAKE_JOBS=2; \
     else \
-        MAKE_JOBS="-j$(nproc)"; \
+        MAKE_JOBS=$(nproc); \
     fi && \
-    echo "Building mond with parallel jobs: $MAKE_JOBS" && \
-    mkdir -p build/release && cd build/release && \
-    cmake ../.. \
-        -DCMAKE_BUILD_TYPE=Release \
-        -DBUILD_GUI_DEPS=OFF \
-        -DARCH=default \
-        -DSTATIC=ON \
-        -DSTACK_TRACE=OFF && \
-    make $MAKE_JOBS daemon
+    if [ "$TARGETARCH" = "arm64" ]; then \
+        DEPENDS_TARGET="aarch64-linux-gnu"; \
+    else \
+        DEPENDS_TARGET="x86_64-linux-gnu"; \
+    fi && \
+    echo "Building dependencies for $DEPENDS_TARGET with $MAKE_JOBS parallel jobs" && \
+    make -j$MAKE_JOBS depends target=$DEPENDS_TARGET && \
+    mkdir -p /output && \
+    cp build/$DEPENDS_TARGET/release/bin/mond /output/mond
 
 # 最终阶段 - 只复制静态链接的二进制文件
 FROM scratch
 
 ARG TARGETARCH
 
-COPY --from=build /monero/build/release/bin/mond /linux_${TARGETARCH}/mond
+COPY --from=build /output/mond /linux_${TARGETARCH}/mond