docker course easily ! ( theory and practical )
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sudo apt install docker.io ----- to install docker as linux package
sudo pip install docker-compose ----- to install docker-compose on linux
00:00 the theory part of docker
20:03 the practical part of docker
The Docker daemon runs as root. You must usually prefix Docker commands with sudo. This can get tedious if you’re using Docker often. Adding yourself to the docker group will let you use Docker without sudo.
sudo usermod -aG docker $USER
Once you’re in the group, logout and login again. Alternatively, run the newgrp docker command to immediately login to the updated group. You should now be able to drop sudo from Docker commands.
Docker is a set of platform as a service products that use OS-level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries, and configuration files; they can communicate with each other through well-defined channels.
In the theory part of the video i have made a mistake, please excuse me.
I said, VM has two layers and it is false ! The right form of that is : VM uses two layers of our machine.
I said, docker hast one layer and it is false ! The right form of that is : docker usese one layer of our machine !
A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another.
https://hub.docker.com/
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