add files infra docker service for data platform

01-infra/README.md

@@ -0,0 +1,17 @@
+# 01-infra: Infrastructure Layer
+
+## Services
+- **Nginx Proxy Manager** (port 80, 443, 81)
+- **Keycloak** (port 8080)
+- **PostgreSQL** (internal only)
+
+## Start
+```bash
+docker compose --env-file ../.env.global up -d
+```
+
+## Access
+- Nginx Proxy Manager: http://localhost:81
+  - Default: admin@example.com / changeme
+- Keycloak: http://localhost:8080
+  - Admin: see KEYCLOAK_ADMIN in .env.global