fix: add automatic database migrations on startup and copy drizzle folder to Docker

- Auto-run migrations when db module loads
- Copy drizzle migrations folder to Docker image
- Generate missing color column migration
- Fixes 500 errors on /api/candles and /api/annotations in Docker

Dockerfile

@@ -28,6 +28,9 @@ COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 # Copy node_modules for native dependencies like better-sqlite3
 COPY --from=builder --chown=nextjs:nodejs /app/node_modules ./node_modules
 
+# Copy drizzle migrations
+COPY --from=builder --chown=nextjs:nodejs /app/drizzle ./drizzle
+
 RUN mkdir -p /app/public /app/data && chown -R nextjs:nodejs /app/public /app/data
 
 ENV NODE_ENV=production PORT=3000 HOSTNAME=0.0.0.0

src/lib/db/index.ts

@@ -1,5 +1,6 @@
 import Database from 'better-sqlite3';
 import { drizzle } from 'drizzle-orm/better-sqlite3';
+import { migrate } from 'drizzle-orm/better-sqlite3/migrator';
 import * as schema from './schema';
 import path from 'path';
 import fs from 'fs';
@@ -13,3 +14,12 @@ if (!fs.existsSync(dataDir)) {
 const dbPath = path.join(dataDir, 'candles.db');
 const sqlite = new Database(dbPath);
 export const db = drizzle(sqlite, { schema });
+
+// Run migrations on startup
+try {
+  migrate(db, { migrationsFolder: path.join(process.cwd(), 'drizzle') });
+  console.log('✅ Database migrations completed');
+} catch (error) {
+  console.error('❌ Migration failed:', error);
+  throw error;
+}