Fix Docker build: compile TS packages for runtime

Fixes ERR_UNKNOWN_FILE_EXTENSION at container startup by compiling @groombook/types and @groombook/db to dist/ before the runtime stage, and copying only compiled JS instead of raw TypeScript source.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/db/package.json

@@ -2,9 +2,10 @@
   "name": "@groombook/db",
   "version": "0.0.1",
   "private": true,
-  "main": "./src/index.ts",
+  "main": "./dist/index.js",
   "types": "./src/index.ts",
   "scripts": {
+    "build": "tsc",
     "generate": "drizzle-kit generate",
     "migrate": "drizzle-kit migrate",
     "seed": "tsx src/seed.ts",