Fix docker-compose: use init script for multi-DB setup, fix build context paths

- Postgres init: mount docker-init-db.sh to create per-product databases and run migrations
- Fix build contexts: relative to products/ dir (compose lives in products/)

products/docker-compose.yml

@@ -15,12 +15,11 @@ services:
       - "5432:5432"
     volumes:
       - pg_data:/var/lib/postgresql/data
-      - ./products/01-llm-cost-router/migrations:/docker-entrypoint-initdb.d/01-route:ro
-      - ./products/02-iac-drift-detection/saas/migrations:/docker-entrypoint-initdb.d/02-drift:ro
-      - ./products/03-alert-intelligence/migrations:/docker-entrypoint-initdb.d/03-alert:ro
-      - ./products/04-lightweight-idp/migrations:/docker-entrypoint-initdb.d/04-portal:ro
-      - ./products/05-aws-cost-anomaly/migrations:/docker-entrypoint-initdb.d/05-cost:ro
-      - ./products/06-runbook-automation/saas/migrations:/docker-entrypoint-initdb.d/06-run:ro
+      - ./docker-init-db.sh:/docker-entrypoint-initdb.d/01-init-db.sh:ro
+      - ./03-alert-intelligence/migrations:/migrations/03-alert:ro
+      - ./04-lightweight-idp/migrations:/migrations/04-portal:ro
+      - ./05-aws-cost-anomaly/migrations:/migrations/05-cost:ro
+      - ./06-runbook-automation/saas/migrations:/migrations/06-run:ro
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U dd0c"]
       interval: 5s
@@ -50,7 +49,7 @@ services:
   # P3: Alert Intelligence
   alert:
     build:
-      context: ./products/03-alert-intelligence
+      context: ./03-alert-intelligence
       dockerfile: Dockerfile
     ports:
       - "3003:3000"
@@ -67,7 +66,7 @@ services:
   # P4: Lightweight IDP / Service Catalog
   portal:
     build:
-      context: ./products/04-lightweight-idp
+      context: ./04-lightweight-idp
       dockerfile: Dockerfile
     ports:
       - "3004:3000"
@@ -86,7 +85,7 @@ services:
   # P5: AWS Cost Anomaly Detection
   cost:
     build:
-      context: ./products/05-aws-cost-anomaly
+      context: ./05-aws-cost-anomaly
       dockerfile: Dockerfile
     ports:
       - "3005:3000"
@@ -104,7 +103,7 @@ services:
   # P6: Runbook Automation (SaaS)
   run:
     build:
-      context: ./products/06-runbook-automation/saas
+      context: ./06-runbook-automation/saas
       dockerfile: Dockerfile
     ports:
       - "3006:3000"