# Use an official Python runtime as a parent image
# 使用官方的Python环境做为父镜像(parent)
FROM python:2.7-slim

# Set the working directory to /app
# 设置容器内的当前工作目录为 /app
WORKDIR /app

# Copy the current directory contents into the container at /app
# 复制当前文件夹内容到容器的 /app 目录下
COPY . /app

# Install any needed packages specified in requirements.txt
# 安装requirements.txt中列出的python包
RUN pip install --trusted-host pypi.python.org -r requirements.txt

# Make port 80 available to the world outside this container
# 对外暴露 80 端口
EXPOSE 80

# Define environment variable
# 定义环境变量 NAME=World
ENV NAME World

# Run app.py when the container launches
# 容器启动时默认运行 python app.py
CMD ["python", "app.py"]