fix: correct devcontainer.json service reference and document profiles

HIGH PRIORITY openai#4 - Docker Compose Profile Configuration Fixed

Changes:
- Fixed devcontainer.json: 'app'  'app-dev' service reference
- Updated runServices to match docker-compose.yml services
- Added Docker Compose Profiles section to README.md

Profile Documentation:
- dev (default): Development environment with hot reload
- prod: Production deployment with resource limits
- actors: Enables Dapr Placement service for actors/workflows

VS Code Integration:
- Tasks already configured for all profiles
- DevContainer now correctly references app-dev service
- All services (app-dev, redis, postgres, dapr-sidecar) properly defined

Verification:
- Current stack running with correct app-dev service
- All 4 containers healthy and running
- DevContainer configuration now matches docker-compose.yml

Author: DeanLuus22021994

.devcontainer/README.md

@@ -31,16 +31,39 @@ This README provides an overview of the DevContainer environment. For detailed i
 ### Using Docker Compose (Host Development)
 
 ```bash
-# Start full stack
+# Start development stack (default)
 docker-compose up -d
 
+# Start with specific profile
+docker-compose --profile prod up -d      # Production environment
+docker-compose --profile actors up -d    # With Dapr Placement service
+
 # Run validation tests from host
 powershell -ExecutionPolicy Bypass -File .\scripts\test-docker-stack.ps1 -Verbose
 
 # View logs
 docker-compose logs -f
 ```
 
+### Docker Compose Profiles
+
+The stack supports multiple profiles for different environments:
+
+| Profile | Services | Use Case |
+|---------|----------|----------|
+| **dev** (default) | app-dev, redis, postgres, dapr-sidecar | Development with hot reload |
+| **prod** | app-prod, redis, postgres, dapr-sidecar | Production deployment |
+| **actors** | dapr-placement | Enable Dapr actors/workflows |
+
+**VS Code Tasks Available**:
+
+- `docker-compose: up dev` - Start development environment
+- `docker-compose: up prod` - Start production environment  
+- `docker-compose: up actors` - Start with actors support
+- `docker-compose: down` - Stop all services
+
+Press `Ctrl+Shift+P` → `Tasks: Run Task` to use these.
+
 ## Architecture
 
 ### Services

.devcontainer/devcontainer.json

@@ -1,9 +1,9 @@
 {
   "name": "OpenAI Agents Python SDK",
   "dockerComposeFile": "../docker-compose.yml",
-  "service": "app",
+  "service": "app-dev",
   "runServices": [
-    "app",
+    "app-dev",
     "redis",
     "postgres",
     "dapr-sidecar"