The initial step in creating a new WAR file is ensuring that your local repository branch has the desired code. This is critical because the WAR file, which stands for Web Application Archive, is a packaged web application that contains all the files necessary to run a web application. If the code in your local repository is not the correct or intended version, the generated WAR file may not function as expected in the deployment environment.
Checking that you have the appropriate code ensures that you are working with the latest changes, bug fixes, and improvements that have been integrated into your project. This step is fundamental because it sets the foundation for all subsequent steps involved in the build process, such as cleaning files or setting environment variables. If the repository does not contain the desired code, subsequent steps may lead to the deployment of an outdated or incorrect application, which can hinder functionality and user experience.
Focusing on the integrity and relevance of your codebase at this stage enhances the reliability of the end product, making it a vital first step before proceeding with the actual build and deployment process.