updated docker ignore

backend/.dockerignore

@@ -1,7 +1,35 @@
-# Ignore virtual environment and cache
+# Virtual environments
 venv/
+.venv/
+env/
+ENV/
+
+# Python cache
 __pycache__/
 *.pyc
+*.py[cod]
+
+# Tooling caches
+.mypy_cache/
+.pytest_cache/
+.ruff_cache/
+
+# Database
 db.sqlite3*
+
+# Runtime data (bind-mounted at runtime, no need to bake into image)
+media/
+backups/
+staticfiles/
+django_cache/
+.seeded
+
+# Secrets / logs
+.env
+.env.*
+!.env.example
+*.log
+
+# IDEs
 .idea/
 .vscode/