Docker Commands

docker –version
docker pull <image name>
docker run -it -d <image name>
docker exec -it <container id> bash : This command is used to access the running container
docker ps
docker ps -a
docker stop <container id>
docker kill <container id>
docker commit <conatainer id> <username/imagename>
docker push <username/image name>
docker images
docker rm <container id>
docker rmi <image-id>
docker build <path to docker file>

Docker Compose

Compose is a tool for defining and running multi-container Docker applications.

With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create and start all the services from your configuration. This file is called docker compose file.

Compose works in all environments: production, staging, development, testing, as well as CI workflows

Using Compose is basically a three-step process:

Define your app’s environment with a Dockerfile so it can be reproduced anywhere.
Define the services that make up your app in docker-compose.yml so they can be run together in an isolated environment.
Run docker-compose up and Compose starts and runs your entire app.

A docker-compose.yml looks like this:

version: '3'

services:

  web:

    build: .

    ports:

    - "5000:5000"

    volumes:

    - .:/code

    - logvolume01:/var/log

    links:

    - redis

  redis:

    image: redis

volumes:

  logvolume01: {}