CUB-119: Add docker-compose.yml + .env.example, remove legacy .NET backend and Angular frontend

docker-compose.yml

@@ -0,0 +1,88 @@
+# =============================================================================
+# Control Center — Full-Stack Docker Compose
+# =============================================================================
+# Boot the entire stack: PostgreSQL + Go backend + React frontend.
+#
+# Usage:
+#   cp .env.example .env          # fill in values
+#   docker compose up --build     # first run (builds images)
+#   docker compose up             # subsequent runs
+#   docker compose down -v        # teardown including DB volume
+# =============================================================================
+
+name: control-center
+
+services:
+  # ── PostgreSQL ──────────────────────────────────────────────────────────────
+  postgres:
+    image: postgres:16-alpine
+    container_name: cc-postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-controlcenter}
+      POSTGRES_USER: ${POSTGRES_USER:-controlcenter}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-changeme}
+    ports:
+      - "${POSTGRES_PORT:-5432}:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./go-backend/migrations:/docker-entrypoint-initdb.d:ro
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-controlcenter} -d ${POSTGRES_DB:-controlcenter}"]
+      interval: 5s
+      timeout: 3s
+      retries: 5
+    networks:
+      - cc-network
+
+  # ── Go Backend ──────────────────────────────────────────────────────────────
+  backend:
+    build:
+      context: ./go-backend
+      dockerfile: Dockerfile
+    container_name: cc-backend
+    restart: unless-stopped
+    ports:
+      - "${BACKEND_PORT:-8080}:8080"
+    environment:
+      PORT: "8080"
+      DATABASE_URL: postgres://${POSTGRES_USER:-controlcenter}:${POSTGRES_PASSWORD:-changeme}@postgres:5432/${POSTGRES_DB:-controlcenter}?sslmode=disable
+      CORS_ORIGIN: "${CORS_ORIGIN:-http://localhost:3000}"
+      LOG_LEVEL: ${LOG_LEVEL:-info}
+      ENVIRONMENT: ${ENVIRONMENT:-development}
+      GATEWAY_URL: ${GATEWAY_URL:-http://openclaw-gateway:18789/api/agents}
+      GATEWAY_POLL_INTERVAL: ${GATEWAY_POLL_INTERVAL:-5s}
+    depends_on:
+      postgres:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://localhost:8080/health"]
+      interval: 10s
+      timeout: 3s
+      retries: 3
+      start_period: 5s
+    networks:
+      - cc-network
+
+  # ── React Frontend (nginx) ──────────────────────────────────────────────────
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    container_name: cc-frontend
+    restart: unless-stopped
+    ports:
+      - "${FRONTEND_PORT:-3000}:80"
+    depends_on:
+      backend:
+        condition: service_healthy
+    networks:
+      - cc-network
+
+volumes:
+  postgres_data:
+    driver: local
+
+networks:
+  cc-network:
+    driver: bridge