Day1

==================================================
What is Docker?
=========================================
	Cont mgmt. tool.
	Release
		commm
		entr
	soloman hykes
	go 
	Windows
	Linux

Tool
- Save Cost
	1 Day	---- 5 mins 	1 sec
	=====
	1 PS	  1 VM		1 Container
=================================================
				Container takes less cpu+ram+st+lice
				less wastage

- Save time
	1 Day	---- 5 mins 	1 sec

- Imp eff


mgmt
==========================
VM -> Create + Start + stop + restart + pause + unp + kill + remove
Container - Create + Start + stop + restart + pause + unp + kill + remove

What is Cont.
============================
https://www.youtube.com/watch?v=wWNE3J1Hr_k

Container
	lightweight APP RUNTIME env

Kernal
	Namespace
		PID	1 PID
		mnt ---> rootfs e.g windows16
		Net -1 net
		1 user
		=================
		Container

BOOTFS --> ROOTFS --> USERFS -> APP
windowskernel -- windows16 - -admin --- notepad
Linuxkernal --> ubunt/fed/centos -- root -- ls

Understanding of Windows Kernel


Class --> N Object
		== 1 PID
	        same beh as it has in class
==============================================

I want to learn DOCKER. What to do?
========================================
Step 1 - First install Docker?
<blockquote class="wp-embedded-content" data-secret="rAEdaySE4D"><a href="https://www.devopsschool.com/blog/how-to-install-docker-in-linux/">Docker Tutorials: How to Install Docker in Ubuntu?</a></blockquote><iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="position: absolute; visibility: hidden;" title="“Docker Tutorials: How to Install Docker in Ubuntu?” — DevOpsSchool.com" src="https://www.devopsschool.com/blog/how-to-install-docker-in-linux/embed/#?secret=YOBMUK1nEV#?secret=rAEdaySE4D" data-secret="rAEdaySE4D" width="600" height="338" frameborder="0" marginwidth="0" marginheight="0" scrolling="no"></iframe>
https://docs.docker.com/desktop/setup/install/windows-install/

Step 2 - Download Image.
VM Image --->
BOOTFS --> ROOTFS --> USERFS -> APP
windowskernel -- windows16 - -admin --- notepad
Linuxkernal --> ubunt/fed/centos -- root -- ls 

Docker image
ROOTFS --> USERFS -> APP
windows16 - -admin --- notepad
ubunt/fed/centos -- root -- ls 

Step 3 - Download from - https://hub.docker.com/

Step 4 - Run a container from image or many thing like 
Create + Start + stop + restart + pause + unp + kill + remove

 12  docker images
   13  docker pull httpd
   14  clear
   15  docker images
   16  clear
   17  docker create httpd
   18  docker ps -a
   19  docker create httpd
   20  docker ps -a
   21  docker start
   22  docker start dd4b7956607e
   23  docker ps -a
   24  docker start af68c12fed74
   25  docker ps -a
   26  clear
   27  docker ps
   28  docker ps -a
   29  docker stop laughing_thompson
   30  docker ps -a
   31  docker restart
   32  docker restart friendly_pike
   33  docker ps -a
   34  docker pause af68c12fed74
   35  docker ps -a
   36  docker stats
   37  docker ps -a
   38  docker unpause af68c12fed74
   39  docker ps -a
   40  docker kill
   41  docker kill af68c12fed74
   42  docker ps -a
   43  docker rm dd4b7956607e
   44  docker ps -a


How can I access it?
======================================
RUN APP In VMS or Laptop
windows --?  power shell
Linux - > Bash shell
docker exec -it af68c12fed74 /bin/bash

ABOUT docker run

to Attach
================================
pull + Create + Start + Attach

$ docker run -d
DO NOT to Attach
================================
pull + Create + Start + Attach

$ docker run -d httpd
$ docker ps -a

ip:port

$ docker run -itd -p 80:80 httpd 
$ docker run -itd -p 81:80 httpd 
vdocker run -itd -p 82:80 httpd 

DEMO
===========================================
Install Docker Desktop
https://docs.docker.com/desktop/setup/install/windows-install/Code language: JavaScript (javascript)