# Overview
This document describes how to maintain the containerized typesetting system.
Broadly, the container is built locally then deployed to a web server capable
of serving static web pages.
## Installation wizard
The installation wizard is responsible for installing the containerization
software and the container image. The container manager class loads the
image from a URL. That URL is defined in the `messages.properties` file.
# Upgrade
Upgrade the containerization software as follows:
1. Edit `src/main/resources/com/keenwrite/messages.properties`.
1. Set `Wizard.typesetter.container.version` to the latest version.
1. Set `Wizard.typesetter.container.checksum` to the Windows version checksum.
1. Set `Wizard.typesetter.container.image.version` to the latest image version.
1. Save the file.
The containerization software versions are changed.
# Publish
Publish the changes to the container image as follows:
The container image is published.