docker-reveal - A Docker image for reveal.js presentations

This docker image is useful for creating reveal.js presentations. It uses the Yeoman generator generator-reveal under the hoods.

Features

• Based on Alpine Linux
• Butterfly, a HTML 5 terminal emulation, for inline terminal demos.
• Docker client
• Live Reload
• Java 8 and Maven 3.5.0

Initialization

All your slides will be stored belong a certain directory, referred to $SLIDES from now on. In order to initialize a first simple set of slides (as yo reveal would do) mount $SLIDES into the container and run this image with the option -i:

docker run -ti \
           -p 9000:9000 -p 57575:57575 -p 35729:35729 \
           -v $SLIDES:/slides \
           rhuss/docker-reveal -i

This will copy over a set of slides and start an HTTP server on port 9000. You can visit the demo slides by opening your browser at http://dockerhost:9000/ where dockerhost is the IP address of you docker host (e.g. localhost).

You can now edit the files in $SLIDES. Any change will be picked up immediately and if you have LiveReload installed your browser will refresh immediately.

Creating slides

Slides can be created easily with yo:

docker run -ti \
           -v $SLIDES:/slides \
           rhuss/docker-reveal -n "Slide title" [--markdown|--notes|--attributes]

This can be also done manually:

• Create a new slide in $SLIDES/slides/, either as HTML (.html) or Markdown (.md) file
• Add this slide to the list in $SLIDES/slides/list.json

More options are available, please refer to generator-reveal's documentation for details.

Tips

• If you are using mvn in you demos, you might want to mount your local Maven repository to avoid unnecessary download times. This can be done by adding a -v ~/.m2:/root/.m2 to the Docker command line. Otherwise the container starts up with an empty local repository.
• In order to access the outer Docker daemon a -v /var/run/docker.sock:/var/run/docker.sock must be added so that the Unix socket is also available within the container. See The Docker Wormhole Pattern for more information.

Finishing up

When you are finished with authoring you can create your own image containing your full presentation. This could also contain the source of your applications which you demo. An example Dockerfile could look like:

FROM rhuss/docker-reveal:latest

# Add presentation slides (add here the $SLIDES dir as source directory
ADD slides/ /

# Optionally checkout your source code and warm it up
RUN cd / && \
    git clone https://github.com/rhuss/docker-maven-sample.git && \
    cd docker-maven-sample && \
    mvn install

8bitdo Zero support

In case you own a 8bitdo Zero and want to use it as remote control, set in you Browser's localStorage (see Developer console) the key use8Bitdo to true. Then you can use the following buttons for the following actions:

Button	Action
L	Next slide
R	Previous slide
Up	Up one slide
Down	Down one slide
Left	Left one slide
Right	Right one slide
Select	Menu
Start	Overview
A	Pause (Black)
Y	Full Screen

When in menu mode the button mappings is:

Button	Action
L	Select menu item
Up	Up in menu list
Down	Down in menu list
Left	Left panel
Right	Right Panel
Select	Leave Menu
A	First position in list
Y	Last position in list
X	Page up in list
Y	Page down in list

Gotchas

The terminal emulation works quite nicely but is of course completely insecure with respect to your container. Please keep this in mind. Also, the dynamic sizing of the iframe providing the Butterfly terminal emulation could be improved. I happily will apply pull requests here ;-)