docker-compose教程之安装使用和快速入门

$ sudo apt-get remove docker docker-engine docker.io

$ curl -fsSL get.docker.com -o get-docker.sh
$ sudo sh get-docker.sh

$ curl -sSL https://get.docker.com/ | sh 

$ sudo docker run hello-world

sudo curl -L https://github.com/docker/compose/releases/download/1.16.1/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose

sudo curl -L https://get.daocloud.io/docker/compose/releases/download/1.25.1/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

$ docker-compose --version
docker-compose version 1.16.1, build 1719ceb

sudo pip install docker-compose

version: "3"
services:
 
 redis:
  image: redis:alpine
  ports:
   - "6379"
  networks:
   - frontend
  deploy:
   replicas: 2
   update_config:
    parallelism: 2
    delay: 10s
   restart_policy:
    condition: on-failure
 
 db:
  image: postgres:9.4
  volumes:
   - db-data:/var/lib/postgresql/data
  networks:
   - backend
  deploy:
   placement:
    constraints: [node.role == manager]
 
 vote:
  image: dockersamples/examplevotingapp_vote:before
  ports:
   - 5000:80
  networks:
   - frontend
  depends_on:
   - redis
  deploy:
   replicas: 2
   update_config:
    parallelism: 2
   restart_policy:
    condition: on-failure
 
 result:
  image: dockersamples/examplevotingapp_result:before
  ports:
   - 5001:80
  networks:
   - backend
  depends_on:
   - db
  deploy:
   replicas: 1
   update_config:
    parallelism: 2
    delay: 10s
   restart_policy:
    condition: on-failure
 
 worker:
  image: dockersamples/examplevotingapp_worker
  networks:
   - frontend
   - backend
  deploy:
   mode: replicated
   replicas: 1
   labels: [APP=VOTING]
   restart_policy:
    condition: on-failure
    delay: 10s
    max_attempts: 3
    window: 120s
   placement:
    constraints: [node.role == manager]
 
 visualizer:
  image: dockersamples/visualizer:stable
  ports:
   - "8080:8080"
  stop_grace_period: 1m30s
  volumes:
   - "/var/run/docker.sock:/var/run/docker.sock"
  deploy:
   placement:
    constraints: [node.role == manager]
 
networks:
 frontend:
 backend:
 
volumes:
 db-data:

$ mkdir compose_test
$ cd compose_test
$ mkdir src   # 源码文件夹
$ mkdir docker # docker配置文件夹

└── compose_test
  ├── docker
  │  └── docker-compose.yml
  ├── Dockerfile
  └── src
    ├── app.py
    └── requirements.txt

from flask import Flask
from redis import Redis
 
app = Flask(__name__)
redis = Redis(host='redis', port=6379)
 
@app.route('/')
def hello():
  count = redis.incr('hits')
  return 'Hello World! I have been seen {} times.\n'.format(count)
 
if __name__ == "__main__":
  app.run(host="0.0.0.0", debug=True)

flask
redis

FROM python:3.7
 
COPY src/ /opt/src
WORKDIR /opt/src
 
RUN pip install -r requirements.txt
CMD ["python", "app.py"]

version: '3'
services:
 web:
  build: ../
  ports:
   - "5000:5000"
 redis:
  image: "redis:3.0.7"

$ docker-compose up
# 若是要后台运行： $ docker-compose up -d
# 若不使用默认的docker-compose.yml 文件名：
$ docker-compose -f server.yml up -d 

version: '3'
services:
 web:
  build: ../
  ports:
   - "5000:5000"
  volumes:
   - ../src:/opt/src
 redis:
  image: "redis:3.0.7"

$ docker-compose up -d

version: '2'
services:
 webapp:
  build: ./dir

version: '2'
services:
 webapp:
  build:
   context: ./dir
   dockerfile: Dockerfile-alternate
   args:
    buildno: 1

build: ./dir
image: webapp:tag

ARG buildno
ARG password
 
RUN echo "Build number: $buildno"
RUN script-requiring-password.sh "$password"

build:
 context: .
 args:
  buildno: 1
  password: secret
 
build:
 context: .
 args:
  - buildno=1
  - password=secret

image: redis
image: ubuntu:14.04
image: tutum/influxdb
image: example-registry.com:4000/postgresql
image: a4bc65fd

container_name: my-web-container

volumes:
 # 只需指定一个路径，让引擎创建一个卷
 - /var/lib/mysql
 # 指定绝对路径映射
 - /opt/data:/var/lib/mysql
 
 # 相对于当前compose文件的相对路径
 - ./cache:/tmp/cache
 
 # 用户家目录相对路径
 - ~/configs:/etc/configs/:ro
 
 # 命名卷
 - datavolume:/var/lib/mysql

version: "3"
 
services:
 web1:
  build: ./web/
  volumes:
   - ../code:/opt/web/code
 web2:
  build: ./web/
  volumes:
   - ../code:/opt/web/code

version: "3"
 
services:
 db:
  image: db
  volumes:
   - data-volume:/var/lib/db
 backup:
  image: backup-service
  volumes:
   - data-volume:/var/lib/backup/data
 
volumes:
 data-volume:

command: bundle exec thin -p 3000

command: ["bundle", "exec", "thin", "-p", "3000"]

web:
 links:
  - db
  - db:database
  - redis

external_links:
 - redis_1
 - project_db_1:mysql
 - project_db_1:postgresql

expose:
 - "3000"
 - "8000"

ports:
 - "3000"
 - "3000-3005"
 - "8000:8000"
 - "9090-9091:8080-8081"
 - "49100:22"
 - "127.0.0.1:8001:8001"
 - "127.0.0.1:5000-5010:5000-5010"
 - "6060:6060/udp"

ports:
 - target: 80
  published: 8080
  protocol: tcp
  mode: host

restart: "no"
restart: always
restart: on-failure
restart: unless-stopped

environment:
 RACK_ENV: development
 SHOW: 'true'
 SESSION_SECRET:
 
environment:
 - RACK_ENV=development
 - SHOW=true
 - SESSION_SECRET

pid: "host"

dns: 8.8.8.8
dns:
 - 8.8.8.8
 - 9.9.9.9