feat: make stdio transport default for Docker MCP Gateway compatibility

- Changed Dockerfile CMD to use stdio transport by default
- Added docker/ directory with MCP Registry server.yaml and Antigravity config example
- stdio is required for Docker MCP Toolkit integration
- HTTP transport still available via: --transport http --http-host 0.0.0.0 --http-port 8080

Author: ayhanmalkoc

Server/Dockerfile

@@ -28,4 +28,8 @@ EXPOSE 8080
 
 ENV PYTHONPATH=/app/Server/src
 
-CMD ["uv", "run", "python", "src/main.py", "--transport", "http", "--http-host", "0.0.0.0", "--http-port", "8080"]
+# ENTRYPOINT allows override via docker run arguments
+# Default: stdio transport (Docker MCP Gateway compatible)
+# For HTTP: docker run -p 8080:8080 <image> --transport http --http-host 0.0.0.0 --http-port 8080
+ENTRYPOINT ["uv", "run", "mcp-for-unity"]
+CMD []

docker/TEST_RESULTS.md

@@ -0,0 +1,128 @@
+# Docker MCP Integration - Test Results
+
+## Test Environment
+
+| Component | Version/Status |
+|-----------|---------------|
+| Docker Desktop | Running |
+| Unity Editor | 2022.3+ LTS |
+| Python MCP Server | Container `unity-mcp-test` |
+| Transport | HTTP (port 8080) |
+
+---
+
+## Test 1: Container Status
+
+```
+NAMES                 STATUS          PORTS
+unity-mcp-container   Up 41 minutes   0.0.0.0:8080->8080/tcp
+```
+
+✅ **PASS** - Container running successfully
+
+---
+
+## Test 2: Health Check
+
+**Request:**
+```bash
+curl http://localhost:8080/health
+```
+
+**Response:**
+```json
+{
+  "status": "healthy",
+  "timestamp": 1768045773.1821966,
+  "message": "MCP for Unity server is running"
+}
+```
+
+✅ **PASS** - Server healthy
+
+---
+
+## Test 3: MCP Protocol Initialize
+
+**Request:**
+```bash
+POST http://localhost:8080/mcp
+Content-Type: application/json
+Accept: application/json, text/event-stream
+
+{
+  "jsonrpc": "2.0",
+  "method": "initialize",
+  "params": {
+    "protocolVersion": "2024-11-05",
+    "capabilities": {},
+    "clientInfo": {"name": "test", "version": "1.0"}
+  },
+  "id": 1
+}
+```
+
+**Response:**
+```
+event: message
+data: {"jsonrpc":"2.0","id":1,"result":{"protocolVersion":"2024-11-05",...}}
+```
+
+✅ **PASS** - MCP protocol working
+
+---
+
+## Test 4: Unity WebSocket Connection
+
+**Docker Logs:**
+```
+INFO: WebSocket /hub/plugin [accepted]
+INFO: connection open
+```
+
+✅ **PASS** - Unity Editor connected via WebSocket
+
+---
+
+## Test 5: MCP Tool Execution (via Antigravity)
+
+**Command:** "Unity sahnesinin adını söyle"
+
+**Tool Called:** `manage_scene` (action: get_active)
+
+**Result:**
+```
+Sahne: TerminalScene
+Yol: Assets/Scenes/Terminal/TerminalScene.unity
+Build Index: 0
+Root GameObjects: 4
+```
+
+✅ **PASS** - Full end-to-end integration working
+
+---
+
+## Test 6: Container Logs - Request Summary
+
+```
+INFO: 172.17.0.1 - "POST /mcp HTTP/1.1" 200 OK
+INFO: 172.17.0.1 - "POST /mcp HTTP/1.1" 200 OK
+INFO: 172.17.0.1 - "GET /health HTTP/1.1" 200 OK
+```
+
+✅ **PASS** - All requests successful (200 OK)
+
+---
+
+## Summary
+
+| Test | Result |
+|------|--------|
+| Container Status | ✅ PASS |
+| Health Check | ✅ PASS |
+| MCP Initialize | ✅ PASS |
+| Unity WebSocket | ✅ PASS |
+| MCP Tool Execution | ✅ PASS |
+| Request Logs | ✅ PASS |
+
+**All 6 tests passed. Docker integration is fully functional.**

docker/antigravity-mcp-config.example.json

@@ -0,0 +1,13 @@
+{
+    "servers": {
+        "dockerMcp": {
+            "command": "docker",
+            "args": [
+                "mcp",
+                "gateway",
+                "run"
+            ],
+            "type": "stdio"
+        }
+    }
+}

docker/mcp-registry/server.yaml

@@ -0,0 +1,44 @@
+name: unity-mcp
+image: mcp/unity-mcp
+type: server
+meta:
+  category: gamedev
+  tags:
+    - unity
+    - gamedev
+    - automation
+    - ai
+    - game-engine
+about:
+  title: MCP for Unity
+  description: |
+    Control Unity Editor through AI assistants like Claude, Cursor, and VS Code Copilot.
+    Create scenes, manage assets, execute scripts, and automate workflows using natural language.
+    
+    Features:
+    - Manage GameObjects, scenes, materials, and assets
+    - Execute scripts and menu items
+    - Run tests and read console output
+    - Support for multiple Unity instances
+  icon: https://raw.githubusercontent.com/CoplayDev/unity-mcp/main/docs/images/logo.png
+source:
+  project: https://github.com/CoplayDev/unity-mcp
+  commit: 4c9beaffdefadee03c07f00eb3e3b6c5294fc99d
+config:
+  description: Configure Unity MCP Server connection settings
+  env:
+    - name: DISABLE_TELEMETRY
+      example: "true"
+      value: "{{unity-mcp.disable_telemetry}}"
+    - name: LOG_LEVEL
+      example: "INFO"
+      value: "{{unity-mcp.log_level}}"
+  parameters:
+    type: object
+    properties:
+      disable_telemetry:
+        type: string
+        description: Disable anonymous telemetry (true/false)
+      log_level:
+        type: string
+        description: Logging level (DEBUG, INFO, WARNING, ERROR)