A barebones Deno webserver in Docker

Deno Docker Image

A tiny, Ubuntu-based Deno image. It spawns a “hello world” webserver.

Running

To run, execute ./start.sh. This will start a docker-compose service stack containing:

• app: A simple Deno HTTP server that outputs “Hello World!”
• nginx: The extremely popular Nginx reverse proxy that sits in front of the Deno server

Implementation

This app, out of the box, will assume that you’re running the server at the URL https://deno.local. You’ll need to map this hostname to your Docker Machine’s IP address using whatever hosts file is appropriate for your operating system.

• /etc/hosts on linux/Mac
• c:\Windows\system32\drivers\etc\hosts on Windows. (Run Notepad.exe in Administrator mode to edit this file).

Running your own scripts

If you want to test out your own scripts instead of running the provided example server:

• Mount your scripts folder to the /app folder in the container.
• Provide a new deno run command to execute your script. Don’t forget to allow the necessary permissions!

Example:

docker run --rm --name deno \
  -v /my/scripts/directory:/app:ro \
  torgie/deno.land:latest \
  deno run myScript.js

And to stop it:

docker stop deno

Download Details:

Author: torgie

Demo: https://hub.docker.com/repository/docker/torgie/deno.land

Source Code: https://github.com/torgie/docker-deno

#deno #nodejs #node #javascript #docker

What is GEEK

Buddha Community

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

A barebones Deno webserver in Docker

Deno Docker Image

A tiny, Ubuntu-based Deno image. It spawns a “hello world” webserver.

Running

To run, execute ./start.sh. This will start a docker-compose service stack containing:

• app: A simple Deno HTTP server that outputs “Hello World!”
• nginx: The extremely popular Nginx reverse proxy that sits in front of the Deno server

Implementation

This app, out of the box, will assume that you’re running the server at the URL https://deno.local. You’ll need to map this hostname to your Docker Machine’s IP address using whatever hosts file is appropriate for your operating system.

• /etc/hosts on linux/Mac
• c:\Windows\system32\drivers\etc\hosts on Windows. (Run Notepad.exe in Administrator mode to edit this file).

Running your own scripts

If you want to test out your own scripts instead of running the provided example server:

• Mount your scripts folder to the /app folder in the container.
• Provide a new deno run command to execute your script. Don’t forget to allow the necessary permissions!

Example:

docker run --rm --name deno \
  -v /my/scripts/directory:/app:ro \
  torgie/deno.land:latest \
  deno run myScript.js

And to stop it:

docker stop deno

Download Details:

Author: torgie

Demo: https://hub.docker.com/repository/docker/torgie/deno.land

Source Code: https://github.com/torgie/docker-deno

#deno #nodejs #node #javascript #docker

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 :

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

.

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

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