最原始的Dokcerfile

# 使用官方Python 3.6.8镜像
FROM python:3.6.8-slimWORKDIR /app# 复制依赖文件
COPY requirements.txt .RUN pip install --upgrade pip
# 检查并安装依赖（自动处理未安装的包）
RUN pip install --no-cache-dir -r requirements.txt || \{ echo "Failed to install some packages. Retrying with --upgrade..." && \pip install --no-cache-dir --upgrade -r requirements.txt; }# 复制应用代码
COPY . .# 添加健康检查（验证Python环境）
HEALTHCHECK --interval=30s --timeout=10s \CMD python -c "import sys; from pkg_resources import require; require(open('requirements.txt').read())" || exit 1CMD ["python", "/app/HsSignalQa/server.py"]

此方式会到国外源中下载，阿里云始终无法下载，提示如下

[+] Building 0.4s (3/3) FINISHED                                                                                                                                                                                               => [internal] load build definition from Dockerfile                                                                                                                                                                      0.0s=> => transferring dockerfile: 930B                                                                                                                                                                                      0.0s=> [internal] load .dockerignore                                                                                                                                                                                         0.0s=> => transferring context: 2B                                                                                                                                                                                           0.0s=> ERROR [internal] load metadata for swr.cn-east-3.myhuaweicloud.com/library/python:3.6.8-slim                                                                                                                          0.4s
------> [internal] load metadata for swr.cn-east-3.myhuaweicloud.com/library/python:3.6.8-slim:
------
failed to solve: swr.cn-east-3.myhuaweicloud.com/library/python:3.6.8-slim: swr.cn-east-3.myhuaweicloud.com/library/python:3.6.8-slim: not found #最原始的错误已覆盖，这个错误是另外一个源的错误，相同的问题

经过多轮测试均不能访问，一下是解决方法

重点是下面的第2项

使用阿里云容器镜像服务加速器

阿里云提供了Docker Hub镜像加速服务：

1. 登录阿里云控制台
2. 进入"容器镜像服务" > “镜像加速器”
3. 获取专属加速器地址
4. 配置Docker使用该镜像源：

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{"registry-mirrors": ["https://<your-accelerator-address>.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

登录我的阿里云控制台发现，我的控制台是这样的

注意红色的地方，将我的Dockerfile更改为该地址

FROM xxx替换红色框的马赛克.mirror.aliyuncs.com/library/python:3.6.8-slimWORKDIR /app# 复制依赖文件
COPY requirements.txt .RUN pip install --upgrade pip -i https://pypi.tuna.tsinghua.edu.cn/simple
# 检查并安装依赖（自动处理未安装的包）
RUN pip install --no-cache-dir -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple || \{ echo "Failed to install some packages. Retrying with --upgrade..." && \pip install --no-cache-dir --upgrade -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple; }# 复制应用代码
COPY . .# 添加健康检查（验证Python环境）
HEALTHCHECK --interval=30s --timeout=10s \CMD python -c "import sys; from pkg_resources import require; require(open('requirements.txt').read())" || exit 1CMD ["python", "/app/HsSignalQa/server.py"]

完成后，再进度docker build就可以了。