fix dockerfile, add build CI, deploy example

.dockerignore

@@ -0,0 +1,20 @@
+# Git and local tooling
+.git
+.gitignore
+.cursor
+
+# Python caches and local virtualenvs (not copied into image)
+**/.venv
+**/__pycache__
+**/*.py[cod]
+.pytest_cache
+.mypy_cache
+.ruff_cache
+
+# Not used by Dockerfile.server (only COPY python/ and gen/)
+clients/
+deploy/
+
+Makefile
+.env
+.env.*