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Docker.md

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Installing:

  1. For debian[ubuntu/lubuntu]
    • Installing docker 
      sudo apt update

sudo apt install apt-transport-https ca-certificates curl software-properties-common

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu focal stable"

apt-cache policy docker-ce

sudo apt install docker-ce

sudo systemctl status docker
    • Running docker without sudo. 
      sudo usermod -aG docker ${USER}

su - ${USER}

groups

sudo usermod -aG docker username

docker run hello-world

Docker Frequently Used CMD's

  • To save an Image locally as tar : docker save hello-world > hello-world.tar
  • To extract above tar : tar -xfv hello-world.tar'
  • docker images
  • docker rmi -f image_name
  • docker container ls -a
  • docker container stop container_name
  • docker container prune
  • docker-compose up
  • docker-compose up [Detached Mode]
  • docker build -f build/Dockerfile -t tag_name
  • docker-compose ps [To List All The Containers]
  • docker-compose -f build/docker-compose.yml up -d
  • docker run -d -p 127.0.0.1:7777 filemgmt:latest
  • docker-compose rm
  • Push images to private docker registry.
    • docker tag ubuntu altimauthserver.com:6010/ubuntu
    • docker push altimauthserver.com:6010/ubuntu
  • docker info
  • docker tag image_name new_image_tag_name
  • Debug mongodb inside container
    • docker exec -it mongoservice mongo
  • Prune old images, containers, volumes
    • docker container prune && docker image prune && docker network prune && docker volume prune
  • Debug Docker Failing Image While Building
    • docker commit paste-hash temp-image-name
    • docker run -it temp-image-name
  • Debug Container
    • docker exec -it container_name /bin/bash or sh

To spin postgres docker container on local

  • Windows docker run --name postgresql -e POSTGRES_USER=myusername -e POSTGRES_PASSWORD=mypassword -p 5432:5432 -v D:/data:/var/lib/postgresql/data -d postgres
  • Linux docker run --name postgresql -e POSTGRES_USER=myusername -e POSTGRES_PASSWORD=mypassword -p 5432:5432 -v /data:/var/lib/postgresql/data -d postgres