feat(docker): Add Docker support for all services

- Create Dockerfiles for all four services (auth, identity, authz, audit)
  - Multi-stage builds using golang:1.25-alpine
  - Minimal runtime images using alpine:latest
  - Copy config files to runtime image

- Create docker-compose.dev.yml for development
  - Only PostgreSQL and Consul
  - Use when running services locally with 'go run'

- Update docker-compose.yml for full deployment
  - All services + infrastructure
  - Services build from Dockerfiles
  - Health checks and dependencies configured
  - Environment variables for service configuration

- Add .dockerignore to optimize build context
  - Excludes docs, tests, IDE files, build artifacts

- Update SUMMARY.md
  - Document both docker-compose files
  - Add Docker deployment section
  - Update file structure to include Dockerfiles

docker-compose.yml

@@ -1,3 +1,6 @@
+# Full docker-compose: All services + infrastructure
+# Use this to run the complete platform with all services in Docker
+
 services:
   postgres:
     image: postgres:16-alpine
@@ -34,6 +37,90 @@ services:
     networks:
       - goplt-network
 
+  auth-service:
+    build:
+      context: .
+      dockerfile: cmd/auth-service/Dockerfile
+    container_name: goplt-auth-service
+    environment:
+      ENVIRONMENT: production
+      DATABASE_DSN: "postgres://goplt:goplt_password@postgres:5432/goplt?sslmode=disable"
+      REGISTRY_TYPE: consul
+      REGISTRY_CONSUL_ADDRESS: "consul:8500"
+    ports:
+      - "8081:8081"
+    depends_on:
+      postgres:
+        condition: service_healthy
+      consul:
+        condition: service_healthy
+    networks:
+      - goplt-network
+    restart: unless-stopped
+
+  identity-service:
+    build:
+      context: .
+      dockerfile: cmd/identity-service/Dockerfile
+    container_name: goplt-identity-service
+    environment:
+      ENVIRONMENT: production
+      DATABASE_DSN: "postgres://goplt:goplt_password@postgres:5432/goplt?sslmode=disable"
+      REGISTRY_TYPE: consul
+      REGISTRY_CONSUL_ADDRESS: "consul:8500"
+    ports:
+      - "8082:8082"
+    depends_on:
+      postgres:
+        condition: service_healthy
+      consul:
+        condition: service_healthy
+    networks:
+      - goplt-network
+    restart: unless-stopped
+
+  authz-service:
+    build:
+      context: .
+      dockerfile: cmd/authz-service/Dockerfile
+    container_name: goplt-authz-service
+    environment:
+      ENVIRONMENT: production
+      DATABASE_DSN: "postgres://goplt:goplt_password@postgres:5432/goplt?sslmode=disable"
+      REGISTRY_TYPE: consul
+      REGISTRY_CONSUL_ADDRESS: "consul:8500"
+    ports:
+      - "8083:8083"
+    depends_on:
+      postgres:
+        condition: service_healthy
+      consul:
+        condition: service_healthy
+    networks:
+      - goplt-network
+    restart: unless-stopped
+
+  audit-service:
+    build:
+      context: .
+      dockerfile: cmd/audit-service/Dockerfile
+    container_name: goplt-audit-service
+    environment:
+      ENVIRONMENT: production
+      DATABASE_DSN: "postgres://goplt:goplt_password@postgres:5432/goplt?sslmode=disable"
+      REGISTRY_TYPE: consul
+      REGISTRY_CONSUL_ADDRESS: "consul:8500"
+    ports:
+      - "8084:8084"
+    depends_on:
+      postgres:
+        condition: service_healthy
+      consul:
+        condition: service_healthy
+    networks:
+      - goplt-network
+    restart: unless-stopped
+
 volumes:
   postgres_data:
     driver: local
@@ -43,4 +130,3 @@ volumes:
 networks:
   goplt-network:
     driver: bridge
-