vladdsm/docker-shiny

Personalized R shiny server

docker-shiny

Description

Repository to test Shiny App in docker container. This repository is created for investigation/educational purposes. Check out more in this Udemy Course

TDL

• Add user control to the server
• Build shiny app as a package see https://www.r-bloggers.com/building-a-shiny-app-as-a-package/ and https://rtask.thinkr.fr/getting-started-with-golem/
• Video tutorial: https://shinydevseries.com/post/golem-demo/
• Example of the shiny app built with Golem:
• start container with app trackback: docker run --rm -d -p 80:80 --name TRP vladdsm/docker-trackpack
• stop container with app: docker container stop TRP
• Securing credentials: https://stackoverflow.com/q/37552980

Contents

Repository contains:

1. Code for sample shiny application
2. Auxiliary files
3. Dockerfile that builds docker image
4. Executable Script Run_Shiny_Mapped to launch the container containing shiny server with mapped folder on local computer. PURPOSE: Develop App
5. Executable Script Run_Shiny_Embedded to launch the container containing shiny server with embedded demo shiny application. PURPOSE: Embed Apps for shipping into container

How to use

Note about Dockerfile

This Dockerfile is built on rocker/shiny image. Custom R packages are added on top. These packages are listed in the folder 02_code/install_packages.R.

Add your app to the folder

It is possible to either map folder with locally stored shiny app or embed app into the image.

Embed app to the image

Use the following lines in the Dockerfile to add your app:

# Copy Shiny App files to the image COPY testapp/app.R /srv/shiny-server/shinyapps/testapp/

Map locally available app

Change executable script Run_Shiny_Mapped to map local folder. Change code after key -v ...:/srv/shiny-server/

Build this image

Use terminal to navigate to this directory and run the following code:

docker build -t vladdsm/docker-shiny .

Run the container

1. Edit Executable script Run_Shiny_Embedded or Run_Shiny_Mapped by placing specific settings
2. Run executable script...

Alternatively execute this code in the terminal:

docker run --rm -p 3838:3838 vladdsm/docker-shiny

Test application

Open the url: 0.0.0.0:3838 to see the app Stop container by pressing CTRL+C in the active terminal window

Development notes:

To be used with multi-container application:

• Plumber API
• This Shiny Server
• Shiny App

Sources and examples

https://juanitorduz.github.io/dockerize-a-shinyapp/ https://www.bjoern-bos.de/post/learn-how-to-dockerize-a-shinyapp-in-7-steps/