Often, as a product to the customer, not only binary files are transferred, but also source codes of applications. It is then worth considering whether you want to transfer the entire GIT repository or only the source codes. If we were the recipient of a product, the history of file changes can be very valuable …

What is .gitignore file? It's a file containing names or pattern names of directories and files, that should't be included in GIT repository. These are among others files generated by IDE - in case of IntelliJ IDEA it's a directory .idea and file with extension *.iml. Generator .gitignore On website …