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/*