WHY USE DOCKER ?
WE NEED TO INSTALL THE DOCKER SOFTWARE THAT IS ABLE TO HOST THE
DOCKER IMAGE
LOAD THE PRE CONFIGURED DOCKER IMAGE INTO THE DOCKER SOFTWARE.
MANAGE THE DOCKER IMAGE BY DOCKER SOFTWARE INSTALLED.
FOR EVERY OS WE HAVE DOCKER SOFTWARE THAT CAN HOST ANY DOCKER IMAGE
SAME DOCKER IMAGE CAN BE LOADED ON DIFFERENT OS HAVING THEIR VERSION OF
DOCKER SOFTWARE INTALLED ON THEM.
DOCKER IS LIKE A LIGHT WEIGHT VM ON YOUR MAIN OS
DOCKER IS LIKE A LIGHT WEIGH MINI OS ON YOUR MAIN OS
WE RUN OUR APPLICATION IN THAT VM/MINI OS.
WE INSTALL ALL THE DEPENDENCIES OF APPLICATION IN THAT MINI OS/VM
THIS MINI OS/VM IS EASILY SHIPABLE TO NEW MACHINES
ON NEW MACHINES WE DO NOT NEED TO WORRY ABOUT THE
1- DEPENDENCIES OF APPLICATION AS THEY ARE PRE PACKAGED IN DOCKER
2- CONFIGURAITONS OF THE APPLICATION AS THEY ARE THERE AND MAPPED
TO THE DEPENDICES INSIDE CONTAINER.
SO WE SHIP THE APPLICATION WITH ALL ITS ENVIROMENT TO THE NEW OS.
WE DO NOT HAVE TO INSTALL DEPEDENCES ON TARGET MACHIN OS
WE DO NOT AHVE TO MAP THE CONFIGURAIOTN TO THE NEW INSTALLED DEPEDENCIES
WE DO NOT HAVE TO WORRRY ABOUT THE DEPEDENCESI VERSIONS ON THE TARGET MACHINE
WE DO NOT HAVE WORRY ABOUT CONFLICST OF DEPENDEIS
WE DNOT HAVE WORRY ABOUT THE UPGRATDATION AND DOWN GRADATION OF DEPENDECNCES.
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