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Deployment Guide for Docker Images from Docker Hub

Introduction offers you the flexibility to deploy your application from a custom Dockerfile which allows you to define your own development environment.

Freely constructing the environment gives you all the power but sometimes takes a lot of time to create a proper Dockerfile for your application. Why not save your effort by utilising existing Docker images instead of building from scratch, allows you to use Docker image from Docker Hub which contains many repos of pre-built Docker image.

On Docker Hub, there are many Docker images for supported devices with an installed OS and applications. You can find the Docker image satisfied with your specifications, point to this Docker image in your Dockerfile and you have a configured environment for your application. This approach provides a fast and simple way for the deployment of application to


Finding a Docker Image

To find a suitable Docker image for your devices, you can go to Docker Hub and search with specific keywords related the device - e.g., rpi or raspbian for Docker images of Raspberry Pi.

Typically you will find 2 types of image:

  • Docker image with installed OS and sofware which create a development environment for a platform or a programming language - e.g., Python, Java. This type of Docker image can save your time and effort on setting up the environment, just add your code and launch them on
  • Docker image with installed OS and software which fully deploy an application or service - e.g., OwnCloud, MQTT Broker. This type of Docker image is ready to be deployed on, you sometimes need to add some configurations to make it work properly.

Using Docker Image from Docker Hub

To use the image from Docker Hub just simply put its name in the place of the base image for the container in your Dockerfile. For example:

To use repo key3/rpi-raspbian-python2.7-dev on Docker Hub, we set the base image for Dockerfile as:
FROM key3/rpi-raspbian-python2.7-dev
And we have the basis with raspbian OS, python 2.7 and development packages installed ready for deploying python projects. then we can just follow the instructions in Dockerfile guide to make deploys the container to devices.

Let's take repo comzone/rpi-owncloud6 as an example for using Docker image with fully installed application. We set the base image for Dockerfile as:
FROM comzone/rpi-owncloud6
And add a command line to start OwnCloud service in start file (see Dockerfile guide for more details on start file).
Then can help you deploy OwnCloud 6 to devices fast and effortlessly (see details of this project in below section).

Notice: some applications needs to be configured before starting

Example Projects

Here are some applications on using Docker image from Docker Hub as examples for you:

  1. OwnCloud 6 on This project based on a repo from Docker Hub: comzone/rpi-owncloud6. Using Docker image with installed OwnCloud and adding a script to start the OwnCloud service then can deploy OwnCloud 6 on your devices.

  2. Hello World with Go on This project is a simple example for using Docker image from Docker Hub: cretzel/rpi-golang to set up development environment for Go project.

  3. Hello World with Python on This project is a simple example for using Docker image from Docker Hub: key3/rpi-raspbian-python2.7-dev to set up environment for Python project.

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