feat: add MCP server validation script and fix drawio-mcp

- Add validate-mcp.sh script to test MCP servers with protocol messages
- Fix drawio-mcp Dockerfile to use pnpm and correct build directory
- Update drawio-mcp to use build/ instead of dist/
- Validate penpot-mcp, context7-mcp, docker-mcp, drawio-mcp working

validate-mcp.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+# MCP Server Validation Script
+# Tests each MCP server with actual protocol messages
+
+GREEN='\033[0;32m'
+RED='\033[0;31m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Initialize JSON message
+INIT_MSG='{"jsonrpc":"2.0","method":"initialize","params":{"capabilities":{},"protocolVersion":"2024-11-05","clientInfo":{"name":"test","version":"1.0.0"}},"id":1}'
+
+# Test a container with initialize message
+test_mcp_server() {
+    local container_name=$1
+    local timeout=${2:-5}
+
+    echo -e "${YELLOW}Testing $container_name...${NC}"
+
+    # Run container with stdin input
+    result=$(timeout $timeout docker run --rm -i --name "$container_name-test" \
+        "$container_name" \
+        <<<"$INIT_MSG" \
+        2>&1)
+
+    # Check for valid JSON-RPC response
+    if echo "$result" | grep -q '"result"'; then
+        # Check if it has server info
+        if echo "$result" | grep -q '"serverInfo"'; then
+            server_name=$(echo "$result" | grep -o '"name":"[^"]*"' | head -1 | cut -d'"' -f4)
+            version=$(echo "$result" | grep -o '"version":"[^"]*"' | head -1 | cut -d'"' -f4)
+            echo -e "${GREEN}✓ $container_name: Working ($server_name v${version})${NC}"
+            return 0
+        fi
+    fi
+
+    # Check if server requires environment variables
+    if echo "$result" | grep -qi "environment variable"; then
+        echo -e "${YELLOW}⚠ $container_name: Needs environment variables${NC}"
+        return 1
+    fi
+
+    # Check if server needs external service
+    if echo "$result" | grep -qi "connection refused\|not connected"; then
+        echo -e "${YELLOW}⚠ $container_name: Needs external service (expected)${NC}"
+        return 1
+    fi
+
+    # Check other errors
+    echo -e "${RED}✗ $container_name: Failed${NC}"
+    echo -e "${RED}  Error: $(echo "$result" | head -3 | tail -1)${NC}"
+    return 1
+}
+
+# Test all built containers
+echo -e "${YELLOW}=== MCP Server Validation ===${NC}\n"
+
+# Stdio-based MCP servers
+test_mcp_server "kneldevstack-aimiddleware-ghost-mcp"
+test_mcp_server "kneldevstack-aimiddleware-penpot-mcp"
+test_mcp_server "kneldevstack-aimiddleware-imap-mcp"
+test_mcp_server "kneldevstack-aimiddleware-proxmox-mcp"
+test_mcp_server "kneldevstack-aimiddleware-context7-mcp"
+test_mcp_server "kneldevstack-aimiddleware-docker-mcp"
+test_mcp_server "kneldevstack-aimiddleware-drawio-mcp"
+test_mcp_server "kneldevstack-aimiddleware-mcp-redmine"
+test_mcp_server "kneldevstack-aimiddleware-nextcloud-mcp"
+
+echo -e "\n${YELLOW}=== Validation Complete ===${NC}"