Containerized applications for demonstrating nabla containers
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Latest commit 8ee95be Nov 24, 2018

This repository holds some containerized applications that we use for testing and also serves the purpose of showing how to run your own applications using the nabla container bases from the nabla-base-build repository.

Each subdirectory contains two Dockerfiles (Dockerfile for a standard container and Dockerfile.nabla for a nabla container) and a Makefile that builds both standard and nabla containers of the application (for comparison purposes). For example, to build the node-express application, just:

cd node-express

Running the Containers

The Makefile will produce two container images, named after the directory (the test application name) with "-nabla" or "-legacy" appended to the end. To run the applications, use Docker (you must have installed runnc for the nabla case). For example:

docker run --rm -it node-express-legacy
docker run --rm -it --runtime=runnc node-express-nabla

Modifying Dockerfiles

In the general case, each Dockerfile.nabla represents a stage build. For example, the first stage may install all of the node.js or Python packages necessary in a standard container, then the second stage copies them into a fresh nabla base container for the language runtime.

The example Dockerfile.nabla files in this repository assume that the bases are available locally, as if built from the nabla-base-build repository. Alternatively, the FROM line could reference our base images on Docker hub, for example:

FROM nablact/nabla-node-base

Information about the demo applications

  • node-express-nabla and node-express-legacy: runs a node express web server. Access it on port 8080; you should receive a text string "Nabla!".

  • node-webrepl-naba and node-webrepl-legacy: runs a webrepl in node. Access it on port 8081.

  • python-tornado-nabla and python-tornado-legacy: runs a Python tornado web server. Access it on port 5000, you should see some xs.

  • redis-test-nabla and redis-test-legacy: runs a Redis key/value store. Access it on port 6379 using e.g. the Redis CLI (you should see OK):

    redis-cli -h -p 6379 set foo bar

See Also