docs: add DOCKER_GUIDE.md and fix .env parsing; chore: update docker and script configurations

scripts/verify_files.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+# BTC Bot Dashboard Setup Script
+# Run this from ~/btc_bot to verify all files exist
+
+echo "=== BTC Bot File Verification ==="
+echo ""
+
+FILES=(
+    "src/api/server.py"
+    "src/api/websocket_manager.py"
+    "src/api/dashboard/static/index.html"
+    "docker/Dockerfile.api"
+    "docker/Dockerfile.collector"
+)
+
+for file in "${FILES[@]}"; do
+    if [ -f "$file" ]; then
+        size=$(stat -f%z "$file" 2>/dev/null || stat -c%s "$file" 2>/dev/null || echo "unknown")
+        echo "✓ $file (${size} bytes)"
+    else
+        echo "✗ $file (MISSING)"
+    fi
+done
+
+echo ""
+echo "=== Next Steps ==="
+echo "1. If all files exist, rebuild:"
+echo "   cd ~/btc_bot"
+echo "   docker build --network host --no-cache -f docker/Dockerfile.api -t btc_api ."
+echo "   cd docker && docker-compose up -d"
+echo ""
+echo "2. Check logs:"
+echo "   docker logs btc_api --tail 20"