Set .gitignore for each directories

+/env
+/docker
+/.vscode
+.DS_Store
+__pycache__
\ No newline at end of file

 # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 
 # dependencies
-/backend/env
-/frontend/node_modules
-/frontend/.pnp
+/node_modules
+/.pnp
 .pnp.js
 
 # testing
-/frontend/coverage
+/coverage
 
 # production
-/frontend/build
-
-# database
-/backend/db.sqlite3
+/build
 
 # misc
 .DS_Store
@@ -21,7 +17,6 @@
 .env.development.local
 .env.test.local
 .env.production.local
-__pycache__
 
 npm-debug.log*
 yarn-debug.log*