增加Docker编译环境构建脚本

Dockerfile

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+# 使用 ubuntu:20.04 镜像作为基础镜像
+FROM ubuntu:20.04
+
+# 设置环境变量
+ENV DEBIAN_FRONTEND=noninteractive
+
+# 切换到 home 目录
+WORKDIR /home
+
+# 备份原源列表
+RUN cp /etc/apt/sources.list /etc/apt/sources.list.bak
+
+# 使用清华大学的 apt 源
+RUN echo "deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse" > /etc/apt/sources.list
+RUN echo "deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse" >> /etc/apt/sources.list
+RUN echo "deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse" >> /etc/apt/sources.list
+RUN echo "deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse" >> /etc/apt/sources.list
+
+# 更新源
+RUN apt-get update && \
+	apt-get install -y python3 cmake ninja-build cpio srecord libc6-i386 git qemu-system-arm && \
+	git clone https://gitee.com/IsYourGod/mkrtos-tools.git && \
+	cat mkrtos-tools/gcc/gcc-arm-none-eabi-5_4.tar.gz_* | tar -zxpf - -C /home/ && \
+	cat mkrtos-tools/qemu8.1/qemu8.1.tar.gz_* | tar -zxpf - -C /home/
+
+# 默认命令，如果需要的话可以在这里添加
+CMD ["bash"]