Make backend start on PostgreSQL

.gitignore

@@ -1,51 +1,4 @@
-# Environment variables
-.env
-.env.local
-
-# Python
+.venv/
 __pycache__/
-*.py[cod]
-*.class
-*.so
-.Python
-venv/
-env/
-ENV/
-*.egg-info/
-dist/
-build/
-
-# Node
-node_modules/
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-.pnp/
-.pnp.js
-
-# React
-/frontend/build
-/frontend/.env.local
-/frontend/.env.development.local
-/frontend/.env.test.local
-/frontend/.env.production.local
-
-# IDEs
-.vscode/
-.idea/
-*.swp
-*.swo
-*~
-
-# OS
-.DS_Store
-Thumbs.db
-
-# Database
-*.db
-*.sqlite
-postgres_data/
-
-# Logs
-*.log
-logs/
+.pytest_cache/
+.env