gitignore whitelisting https://jasonstitt.com/gitignore-whitelisting-patterns

.gitignore

# ignore all files
*
# but include directories
!*/

# git
!/**/.gitkeep
!/.gitattributes
!/.gitignore

# java
!/src/**
# maven
!/pom.xml
# gradle
!/build.gradle
!/gradle.properties
!/gradle/wrapper/gradle-wrapper.properties
!/gradlew
!/gradlew.bat
!/settings.gradle

# python
/venv
!/*.py
!/requirements.txt

# js
!/*.js
!/*.ts
!/*.tsx
!/.eslintrc.yml
!/package.json
!/package-lock.json

# make
!/Makefile

# ci
!/.github/**

# docker
!/Dockerfile
!/docker-compose.yml

# docs
!/*.md

# misc
!/.editorconfig
!/LICENSE