Docker Note

basics

• 2022-01-15
• Official Guide
• For run docker with Node JS
  • The programming with mosh
  • Youtube How to Get Started with Docker
    • Docker
• Docker has
  • dockerfile
  • image: defined by a dockerfile
    • name
    • tag: like a version number
    • is an immutable file
    • instantiate to a new container with docker build
  • container: the sandbox I called
    • instance of image, run by docker run
    • see difference Docker Image vs Container: The Major Differences
  • CLI
    • docker ps show running containers -a flag to show all containers.
    • docker run run image in a new container: -it flag makes it interactive.
    • docker image #TODO
    • docker tag rename image
  • docker-compose #TODO
• Using command line / terminal
  • override CMD
  • run ubuntu in docker docker run -it ubuntu (create a new container from image)
  • "run linux command in docker" not working

dockerfile

• #TODO Read Best practices for writing Dockerfiles

New Ubuntu Image

• @2022-01-17
• Should move to Linux Note?

docker build . --tag ubuntu-test # build once to get an image
docker run -it --name goal ubuntu-test

Ubuntu New user

• @2022-01-17
• Should move to Linux Note?

adduser USERNAME
usermod -aG sudo USERNAME

Ubuntu tools for Docket image

• 2022-01-17
• add wget and curl: apt-get install wget curl

Continue Docker image Shell

• 2022-01-17

docker start -i $DOCKER_NAME