.dockerignore improve for deployment

.dockerignore

@@ -1,19 +1,39 @@
+# Python cache / compiled
 __pycache__
 *.pyc
 *.pyo
 *.pyd
 .Python
+
+# Build artifacts
 *.so
 *.egg
 *.egg-info
 dist
 build
+
+# VCS
 .git
 .gitignore
+
+# Databases (must live in volumes)
 *.db
 *.db-journal
+
+# Environment / virtualenv
 .env
 .venv
 venv/
 ENV/
+
+# Runtime data (mounted volumes)
 data/
+
+# Editors / OS junk
+.vscode/
+.idea/
+.DS_Store
+Thumbs.db
+
+# Tests (optional)
+tests/