Create Dockerfile

openwrt/sh/Dockerfile

@@ -0,0 +1,32 @@
+FROM alpine:latest AS downloader
+
+RUN apk add --no-cache wget
+
+# ImmortalWrt版本
+ARG IMWRT_VERSION=24.10.4
+ARG TARGETARCH
+
+# 根据TARGETARCH变量自动适配架构
+RUN case "${TARGETARCH}" in \
+        amd64) \
+            URL="https://downloads.immortalwrt.org/releases/${IMWRT_VERSION}/targets/x86/64/immortalwrt-${IMWRT_VERSION}-x86-64-rootfs.tar.gz" \
+            ;; \
+        arm64) \
+            URL="https://downloads.immortalwrt.org/releases/${IMWRT_VERSION}/targets/armsr/armv8/immortalwrt-${IMWRT_VERSION}-armsr-armv8-rootfs.tar.gz" \
+            ;; \
+        *) \
+            echo "错误：不支持的架构 ${TARGETARCH}" && exit 1 \
+            ;; \
+    esac && \
+    echo "开始下载 ImmortalWrt rootfs，版本：${IMWRT_VERSION}，架构：${TARGETARCH}" && \
+    wget -O /rootfs.tar.gz "$URL" && \
+    mkdir -p /rootfs && \
+    tar -xzf /rootfs.tar.gz -C /rootfs
+
+FROM scratch
+
+COPY --from=downloader /rootfs/ /
+
+WORKDIR /
+
+CMD ["/sbin/init"]