初步规划devstar模板

.devstar/Dockerfile.alpine-latest

@@ -0,0 +1,13 @@
+FROM docker.io/library/alpine:latest
+
+# 安装开发工具（合并RUN层，减少镜像大小）
+RUN apk add --no-cache \
+    build-base \
+    openssh-server openssh-keygen openssh-client \
+    openrc \
+    git \
+    bash \
+    curl \
+    ca-certificates \
+    && update-ca-certificates \
+    && rm -rf /var/cache/apk/*