Docker Compose Commands.txt

1) 

build option:


mkdir composetest
cd composetest

vim dockerfile

ARG Version
FROM ubuntu:$Version
MAINTAINER Prasanti
RUN apt-get update
RUN apt-get install -y iputils-ping
CMD sleep 3000

vim docker-compose.yml

version: "3.8"
services:
  webapp:
    build:
      context: .
      dockerfile: dockerfile
      args:
        Version: "latest"

docker-compose up -d

vim docker-compose1.yml

version: "3.8"
services:
  webapp:
    image: nginx:latest
    

docker-compose -f docker-compose1.yml up


2) environment option

cd composetest
vim dockerfile5

FROM ubuntu:latest
MAINTAINER Prasanti
ENV sample=hello
RUN apt-get update
RUN apt-get install -y iputils-ping
RUN mkdir $sample
CMD echo $sample

cd ..
vim docker-compose5.yml

version: "3.8"
services:
  webapp5:
    build:
      context: .
      dockerfile: dockerfile
    image: myubuntuimage:latest
    environment:
      sample: helloworld
    
docker-compose -f docker-compose5.yml up

3) image and ports:

example:

vim docker-compose2.yml

version: "3.8"
services:
  webapp1:
    build:
      context: ./composetest
      dockerfile: dockerfile
      args:
        Version: "latest"
    image : myubuntu
     

docker-compose -f docker-compose2.yml up 

example 2: 

vim docker-compose6.yml

version: "3.8"
services:
  webapp6:
    image : nginx
    ports:
      - "8080:80"
     

docker-compose -f docker-compose6.yml up

4)  Networking


example:
vim docker-compose10.yml

version: "3.8"
services:
  web:
    image: nginx:alpine
    volumes:
      - type: volume
        source: mydata1
        target: /data
        volume:
          nocopy: true 
    networks:
      - frontend
      - existingnetwork
      
  db:
    image: postgres:latest
    environment:
      POSTGRES_PASSWORD: mysecretpassword
    volumes:
      - "/var/run/postgres/postgres.sock:/var/run/postgres/postgres.sock"
      - "dbdata:/var/lib/postgresql/data"
    networks:
      - frontend
      - existingnetwork
volumes: 
  mydata1: 
  dbdata:
networks:
  frontend:
    driver: bridge
  existingnetwork:
    external:
      name: mybridge

docker-compose -f docker-compose10.yml up -d

docker exec -it root_db_1 /bin/bash
apt-get update
apt-get install -y iputils-ping

5) Volumes:

vim docker-compose9.yml

version: "3.8"
services:
  web:
    image: nginx:alpine
    volumes:
      - type: volume
        source: mydata1
        target: /data
        volume:
          nocopy: true 
  db:
    image: postgres:latest
    environment:
      POSTGRES_PASSWORD: mysecretpassword
    volumes:
      - "/var/run/postgres/postgres.sock:/var/run/postgres/postgres.sock"
      - "dbdata:/var/lib/postgresql/data"
volumes: 
  mydata1: 
  dbdata:

docker-compose -f docker-compose9.yml up




6) deploy:

docker swarm init --advertise-addr 192.168.0.28

vim docker-compose11.yml

version: "3.8"
services:
  redis:
    image: redis:alpine
    deploy:
      replicas: 2
      placement:
        max_replicas_per_node: 1
      update_config:
        parallelism: 2
        delay: 10s
      restart_policy:
        condition: on-failure

  db:
    image: postgres
    deploy:
      replicas: 2

docker-compose -f docker-compose11.yml up -d

docker stack deploy -c docker-compose11.yml MySTACK

7) rollback / update config:

vim dc.yml

version: "3.8"
services:
  vote:
    image: nginx:latest    
    deploy:
      replicas: 2
      update_config:
        parallelism: 2
        delay: 10s
        order: stop-first
      restart_policy:
        condition: on-failure

docker stack deploy -c dc.yml STACK2

docker service update --image nginx:stable-perl STACK2_vote