add docker support

[blairun]

Add Docker support for web deployment

This pull request adds Docker support to easily deploy the Numbat web application. It includes a Dockerfile for building the application and a docker-compose.yaml for orchestrating the deployment.

Changes

New file: Dockerfile

Added a multi-stage Dockerfile that:

1. Builds the WebAssembly package using Rust and wasm-pack.
2. Sets up an Nginx server to host the built files.

New file: docker-compose.yaml

Added a docker-compose.yaml file that:

1. Defines the service for the Numbat web application.
2. Provides two options for building:
   a. From the local codebase
   b. Directly from the GitHub repository

How to use

To deploy the Numbat web application using Docker:

1. Ensure Docker and Docker Compose are installed on your system.
2. Navigate to the project root directory.
3. Run docker-compose up --build to build and start the container.
4. Access the application at http://localhost:8192.

Notes

• The docker-compose.yaml file includes two build options. Uncomment the preferred option before running.
• The application is exposed on port 8192. Adjust this in the docker-compose.yaml file if needed.

Testing

• Verify that the Docker build process completes successfully.
• Confirm that the web application is accessible and functioning correctly when deployed using Docker.
• Test both build options in the docker-compose.yaml file.

[sharkdp]

Thank you for your contribution.

This works fine, but I wonder if it's really necessary and for what exactly? Once built, Numbat is a static web application. It can be "deployed" by simply copying it to a server. During development, I just run python -m http.server to work with it (see https://github.com/sharkdp/numbat/blob/master/numbat-wasm/README.md).

[blairun]

Thanks for the feedback. Docker support is just meant as an alternative for those who prefer containerized deployments. I prefer deploying numbat this way for its isolation, portability, and ease of setup and maintenance. Of course, if you don't think it fits in the current scope of the project, I completely understand.