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How to INSTALL Docker

Docker has changed our lives, we dont have to deal with system break or installing specific libraries again and again, and to replicate the same stuff to work on another person pc irrespective of Windows, Linux or Mac we can be sure if his/her system can run docker = he definately can run my project.

But installing docker is tricky, we install it after months or years then we forget how we did it last time and thats fine. We developers work on a lot - so its fine to forget some stuff so to capture more and better stuff that we need in daily life. Okay so for those developers I am putting here the steps to setup docker easily on their system. Original documentation is also there but - phew its too long to be Read.

So here you go! 

  
Official Documentation: Docker Convenience Script
	
	OR

    

  1.  Right Click on This and then click "save link as..."

    2. 

  2.  Save the file with the name on your Desktop as "Anything.sh" (Just it should have sh as extension)

    3. 

  3.  Open Terminal on Desktop and do " sudo chmod +x Anything.sh "

    4. 

  4.  Now your file is ready to RUN.

    5. 

  5.  Simply do " ./Anything.sh "

    6. 
Thats it, your docker installation will begin and you can verify it by typing "docker" in your terminal.



For Windows there is Direct Installer for Docker Desktop  Start Download for Windows 

  

  If want to run docker without "sudo" :P

  
Error:
  Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: 

  If want to run docker without using sudo everytime - you need to add your user (who has root privileges) to docker group.
  For this run following command

    ---
    sudo groupadd docker
    sudo gpasswd -a $USER docker
    newgrp docker or (logout/login your system)
    docker run hello-world
    ---
    
    More Deep Info Here - about using docker w/o sudo
  


Analogy to remember order
  
  port   -p your's:docker's
  volume -v your's:docker's
  


Few Other Important Commands 
  
    docker exec -it  bash
    docker exec -it  python3
    docker attach 
    docker cp mycontainer:/filename.txt filename.txt
  

  Saving and Loading Image - Without Internet
  
    docker save -o  
    docker save --output hello.tar colorapp
    docker load --input hello.tar
  

  Run Python with display
  
    docker run --rm -it --env="DISPLAY" --volume="$HOME/.Xauthority:/root/.Xauthority:rw" python