feat(add cost module):

.dockerignore

@@ -1,2 +1,45 @@
-.git/
+# Byte-compiled / optimized / DLL files
 __pycache__/
+*.py[cod]
+
+# Distribution / packaging
+build/
+dist/
+*.egg-info/
+
+# Virtual environments
+
+.venv/
+env/
+ENV/
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.cache
+nosetests.xml
+coverage.xml
+
+# PyInstaller
+*.spec
+
+# macOS specific files
+.DS_Store
+
+# Windows specific files
+Thumbs.db
+desktop.ini
+
+# Tools and editors
+.idea/
+.vscode/
+cmder/
+
+# Output directories
+Output/
+te/