Containerise (or containerize)

[ExZyle]

Summary

This pull request includes changes for a production container build that can be used by docker or podman.

Prior Work

An outstanding PR from March/April 2023 (#7) includes a Dockerfile for a development build.

This PR does not conflict with the previous work.

The image for PR #7 is around 245M, this one is about 13.6M (5.6M compressed)

The .dockeringnore file included with this PR may reduce the size of the image built by PR #7 since that image also
includes .git/, .vscode/ and anything else that may be floating around the directory.

Changes

Here are the main changes made in this PR:

• Add a .dockerignore to ensure unused directories are not copied into images
• Add a Dockerfile.prod to build a production container

Container Details

The build works by utilising a multi-stage build. The first stage is used to build the front-end code using a node container,
and the second layer is an nginx container that serves the compiled front-end code. There are no node artifacts left in the
final build container. The container exposes the nginx port 80 binding.

Building the Container

To build the container, use:

docker build -t chatgpt -f Dockerfile.prod .

If you are using podman simply replace docker with podman

Running the Container

There are multiple ways to run a container. For a clean quickstart method, use:

docker run --rm chatgpt

If you are using podman simply replace docker with podman

You can use CTRL-C to quit, the --rm option will remove the container once it stops running.

Additional Information

An image I've already built for myself is available at https://hub.docker.com/r/exzyle/chatgpt/tags.

You can use it by:

docker pull exzyle/chatgpt:20240108000
docker run --rm exzyle/chatgpt:20240108000