Add local Docker registry: registry:2 on :5000, build-push.sh, CI auto-deploy

- docker-compose services now pull from localhost:5000 instead of building locally
- build-push.sh builds + pushes all 5 Node images to local registry
- CI workflows get build-push job: test → build → push → deploy
- Deploy becomes: docker compose pull && docker compose up -d
- Eliminates silent git pull + stale Docker cache issues

products/docker-compose.yml

@@ -47,6 +47,15 @@ services:
     volumes:
       - meili_data:/meili_data
 
+  # --- Local Docker Registry ---
+  registry:
+    image: registry:2
+    ports:
+      - "5000:5000"
+    volumes:
+      - registry_data:/var/lib/registry
+    restart: unless-stopped
+
   # --- dd0c Products ---
   # P1: LLM Cost Router (Rust — API server)
   # NOTE: Rust services are behind the "rust" profile because they take 10+ min to compile.
@@ -105,9 +114,7 @@ services:
 
   # P2: IaC Drift Detection (SaaS)
   drift:
-    build:
-      context: ./02-iac-drift-detection/saas
-      dockerfile: Dockerfile
+    image: localhost:5000/dd0c-drift:latest
     ports:
       - "3002:3000"
     environment:
@@ -123,9 +130,7 @@ services:
 
   # P3: Alert Intelligence
   alert:
-    build:
-      context: ./03-alert-intelligence
-      dockerfile: Dockerfile
+    image: localhost:5000/dd0c-alert:latest
     ports:
       - "3003:3000"
     environment:
@@ -141,9 +146,7 @@ services:
 
   # P4: Lightweight IDP / Service Catalog
   portal:
-    build:
-      context: ./04-lightweight-idp
-      dockerfile: Dockerfile
+    image: localhost:5000/dd0c-portal:latest
     ports:
       - "3004:3000"
     environment:
@@ -161,9 +164,7 @@ services:
 
   # P5: AWS Cost Anomaly Detection
   cost:
-    build:
-      context: ./05-aws-cost-anomaly
-      dockerfile: Dockerfile
+    image: localhost:5000/dd0c-cost:latest
     ports:
       - "3007:3000"
     environment:
@@ -180,9 +181,7 @@ services:
 
   # P6: Runbook Automation (SaaS)
   run:
-    build:
-      context: ./06-runbook-automation/saas
-      dockerfile: Dockerfile
+    image: localhost:5000/dd0c-run:latest
     ports:
       - "3006:3000"
     environment:
@@ -199,3 +198,4 @@ services:
 volumes:
   pg_data:
   meili_data:
+  registry_data: