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24 Apr 2020

使用 Docker 建立开发环境

Why Docker

我有洁癖,不想让混乱的环境依赖污染日常使用的系统;

可以第一时间享受到新版本的快乐,比如很早就用上python3.8;

部署极其方便,项目无痛上线;

Dockerfile

Dockerfile 是指挥容器运作的配置文件,在里面可以配置container使用什么操作系统,提前安装哪些 sdk

FROM centos:8
RUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
RUN yum install -y python3 python3-devel net-tools wget cronie vim gcc gcc-c++ autoconf

COPY requirements.txt /tmp/requirements.txt
RUN pip3 install --upgrade pip setuptools -i https://pypi.tuna.tsinghua.edu.cn/simple
RUN pip3 install -r /tmp/requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple

WORKDIR /home/app

EXPOSE 3000

this dockerfile from my project bitcoin python: Link

常用命令

image shell

docker run -it --entrypoint /bin/sh <image-id>

container shell

docker exec -it fdffcb69b7a4 bash

docker-compose

docker container ls
docker rm

docker-compose -f docker-compose.dev.yml build
docker-compose -f compose.dev.yml run centos8_python_dev

# 删除全部container
docker container prune

了解更多

Set specific IP addresses to docker containers created with docker-compose

Docker 从入门到实践

Dockerize your Python Application

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