Docker Compose部署及基础使用详解

version: '3'
services:
 web:
  build: .
  ports:
  - "5000:5000"
  volumes:
  - .:/code
  - logvolume01:/var/log
  links:
  - redis
 redis:
  image: redis
volumes:
 logvolume01: {}

 root@docker01:~# sudo curl -L "https://github.com/docker/compose/releases/download/1.22.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
root@docker01:~# sudo chmod +x /usr/local/bin/docker-compose

root@docker01:~# apt-get -y install python
root@docker01:~# curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
root@docker01:~# python get-pip.py  #安装PIP
root@docker01:~# pip install docker-compose #安装docker compose
 root@docker01:~# docker-compose version #验证安装

root@docker01:~# mkdir composetest  #创建Docker Compose目录
root@docker01:~# cd composetest/
root@docker01:~/composetest# vi app.py

root@docker01:~/composetest# vi Dockerfile #使用Dockerfile构建镜像
FROM python:3.4-alpine
RUN mkdir /root/.pip  #创建pip源配置目录
ADD pip.conf /root/.pip/pip.conf  #将国内pip源添加至需要构建的镜像中
ADD . /code
WORKDIR /code
RUN pip install -r requirements.txt  #根据文件列表使用pip安装
CMD ["python", "app.py"]

root@docker01:~/composetest# vi requirements.txt #创建安装软件列表文件
flask
redis
root@docker01:~/composetest# vi pip.conf #创建基于国内pip源的文件
[global]
index-url = https://mirrors.aliyun.com/pypi/simple/
[install]
trusted-host=mirrors.aliyun.com

root@docker01:~/composetest# vi docker-compose.yml
version: '3'
services:
 web:
  build: .
  ports:
   - "5000:5000"
 redis:
  image: "redis:alpine"

root@docker01:~/composetest# docker-compose up -d #开始构建

root@docker01:~/composetest# docker-compose ps
root@docker01:~/composetest# docker ps

 root@docker01:~/composetest# docker image ls

root@docker01:~/composetest# vi docker-compose.yml
version: '3'
services:
 web:
  build: .
  ports:
   - "5000:5000"
  volumes:
   - .:/code
 redis:
  image: "redis:alpine"
root@docker01:~/composetest# docker-compose up -d #再次构建
root@docker01:~/composetest# vi app.py
……
return 'Hello Docker! I have been seen {} times.\n'.format(count)
……

docker-compose up -d：在后台运行服务；
docker-compose ps：查看当前正在运行的容器；
docker-compose run：运行一次性命令，如docker-compose run web env。