build: improve .dockerignore

.dockerignore

@@ -1,9 +1,37 @@
-spire-1.15.3/data
-.venv
-.venv-flake8
-__pycache__
-*.pyc
-*.pyo
-*.pyd
-.pytest_cache
+# Git metadata
+.git/
+
+# Python environments and generated files
+.venv/
+.venv-*/
+**/.venv/
+**/venv/
+**/env/
+**/tmp_venv/
+__pycache__/
+*.py[cod]
+.pytest_cache/
 .coverage
+coverage/
+htmlcov/
+
+# Node and frontend dependencies
+node_modules/
+
+# Local infrastructure state and caches
+.terraform/
+**/.terraform/
+*.tfstate
+*.tfstate.*
+.terraform.lock.hcl
+
+# Local tools, downloaded artifacts, and temporary output
+spire-*/
+*.log
+tmp/
+temp/
+.gemini/
+
+# OS/editor metadata
+.DS_Store
+.vscode/