Haylie  Conn

Haylie Conn

1624602350

A Quick Introduction To Docker

This is how it goes. You create a piece of code, maybe it’s a ROS Node or a ReactJS application and you pass the package over to a friend. It’s simple build the application and start to use it. Not so fast. Something’s wrong, the version of Python you were using has changed, or the Point Cloud Library has been updated. Well, the next few hours will be trying to match up your package to your friend’s system or vice versa. What if there was a way to ensure packages run the same on various different computers? A sort of container that can be passed around? There is! It’s called Docker

Let’s get started!

Assuming you are using Ubuntu. First go ahead and install Docker from Docker Hub

$ sudo apt-get remove docker docker-engine docker.io containerd runc
$ sudo apt-get update 
$ sudo apt-get install apt-transport-https ca-certificates curl gnupg lsb_release
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
$ echo \  "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
$ sudo apt-get install docker-ce docker-ce-cli containerd.io
$ sudo docker run hello-world

Now you’re all set. Once the hello-world container runs, Docker is installed in your system. Yes, it’s that easy. There are a couple of commands that are useful for Docker. Check out this cheat sheet for more.

#containers #docker

What is GEEK

Buddha Community

A Quick Introduction To Docker
Iliana  Welch

Iliana Welch

1595249460

Docker Explained: Docker Architecture | Docker Registries

Following the second video about Docker basics, in this video, I explain Docker architecture and explain the different building blocks of the docker engine; docker client, API, Docker Daemon. I also explain what a docker registry is and I finish the video with a demo explaining and illustrating how to use Docker hub

In this video lesson you will learn:

  • What is Docker Host
  • What is Docker Engine
  • Learn about Docker Architecture
  • Learn about Docker client and Docker Daemon
  • Docker Hub and Registries
  • Simple demo to understand using images from registries

#docker #docker hub #docker host #docker engine #docker architecture #api

Jenny Jabde

1621251999

Quick Flow Male Enhancement Reviews, Benefits Price & Buy Quick Flow?

364bb242-ab45-4601-b9cc-e444f2270076

On the off chance that you fall in the subsequent class, Quick Flow Male Enhancement is the thing that your body is needing right now. The recently discovered male arrangement is the difficult solver for numerous types and types of erectile pressure causing brokenness and causes those issues to be rectified and henceforth blessings you with the more youthful sexual variant.

What is Quick Flow Male Enhancement?
With the new pill, you can supplant all extraordinary and numerous allopathic drugs you had been taking for each issue in an unexpected way. Quick Flow Male Enhancement is the one in all treating instrument pill and causes those explicitly hurtful issues to get right. Regardless of everything, those obstacles are restored and unquestionably, you can feel that the sexual peaks are better. This item builds body imperativeness and the measure of discharge that is required is likewise directed by it.

**How can it really function? **

Different results of this class have numerous regular Ingredients in them, yet the ones here in Quick Flow Male Enhancement are truly uncommon and furthermore natural in their reap and produce. This allows you to get the experience of the truth of more profound sex intercourse which you generally thought was a fantasy for you. Positively, this is a demonstrated natural thing, and relying upon it is no place off-base according to specialists. It is time that your body is given valuable minerals as requested by age.

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**How to Buy? **

It is fundamental that you visit the site and see by your own eyes you willing we are to help you in each progression. Start from the terms and furthermore know inconspicuously the states of procurement. Any question must be addressed as of now or, more than likely later things probably won’t go as you might suspect. Purchase Quick Flow Male Enhancement utilizing any method of online installment and you may likewise go for the simple EMI choice out there.

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#quick flow male enhancement #quick flow male enhancement reviews #quick flow male enhancement male health #quick flow male enhancement review #quick flow male enhancement offer #quick flow male enhancement trial

Docker Architecture Overview & Docker Components [For Beginners]

If you have recently come across the world of containers, it’s probably not a bad idea to understand the underlying elements that work together to offer containerisation benefits. But before that, there’s a question that you may ask. What problem do containers solve?

After building an application in a typical development lifecycle, the developer sends it to the tester for testing purposes. However, since the development and testing environments are different, the code fails to work.

Now, predominantly, there are two solutions to this – either you use a Virtual Machine or a containerised environment such as Docker. In the good old times, organisations used to deploy VMs for running multiple applications.

So, why did they started adopting containerisation over VMs? In this article, we will provide detailed explanations of all such questions.

#docker containers #docker engine #docker #docker architecture

Docker manifest - A peek into image's manifest.json files

docker manifest – An experimental feature !

The image manifest provides a configuration and a set of layers for a container image.

This is an experimental feature. To enable this feature in the Docker CLI, one can edit the config.json file found in ~/.docker/config.json like :

{
        "auths": {
                "https://index.docker.io/v1/": {
                        "auth": "XXXXXXX"
                }
        },
        "HttpHeaders": {
                "User-Agent": "Docker-Client/19.03.8 (linux)"
        },
        "experimental": "enabled",
        "debug": true
}

What is ‘docker manifest’ ?

The docker manifest command does not work independently to perform any action. In order to work with the docker manifest or manifest list, we use sub-commands along with it. This manifest sub-command can enable us to interact with the image manifests. Furthermore, it also gives information about the OS and the architecture, that a particular image was built for.

A single manifest comprises of information about an image, it’s size, the layers and digest.

A manifest list is a list of image layers (manifests) that are, created by specifying one or more image names. It can then be used in the same way as an image name in docker pull and docker run commands.

Commands to get started with :

After enabling this feature, one would be able to access the following command :

docker-manifest-enter image description here

These commands are easy to use. It basically avoids the need for pulling and running and then testing the images locally, from a docker registry.

Next, to inspect an image manifest, follow this syntax,

 docker manifest inspect image-name

enter image description here

.

#devops #docker #devops #docker #docker learning #docker-image

Iliana  Welch

Iliana Welch

1597368540

Docker Tutorial for Beginners 8 - Build and Run C++ Applications in a Docker Container

Docker is an open platform that allows use package, develop, run, and ship software applications in different environments using containers.
In this course We will learn How to Write Dockerfiles, Working with the Docker Toolbox, How to Work with the Docker Machine, How to Use Docker Compose to fire up multiple containers, How to Work with Docker Kinematic, Push images to Docker Hub, Pull images from a Docker Registery, Push stacks of servers to Docker Hub.
How to install Docker on Mac.

#docker tutorial #c++ #docker container #docker #docker hub #devopstools