Add Procfile to explicitly define start command for DigitalOcean

.do/app.yaml

@@ -7,11 +7,11 @@ services:
     source_dir: backend
     github:
       repo: codegirl-007/kiddos
-      branch: main
+      branch: master
       deploy_on_push: true
 
     build_command: npm install && npm run build
-    run_command: npm run migrate && npm start
+    run_command: npm start
 
     environment_slug: node-js
     instance_size_slug: basic-xxs
@@ -55,8 +55,8 @@ static_sites:
   - name: frontend
     source_dir: frontend
     github:
-      repo: YOUR_GITHUB_USERNAME/kiddos
+      repo: codegirl-007/kiddos
-      branch: main
+      branch: master
       deploy_on_push: true
 
     build_command: npm install && npm run build

backend/Procfile

@@ -0,0 +1,2 @@
+web: npm start
+

backend/package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "dev": "nodemon --exec tsx src/index.ts",
     "build": "tsc",
-    "start": "node dist/index.js",
+    "start": "tsx src/db/migrate.ts && node dist/index.js",
     "migrate": "tsx src/db/migrate.ts",
     "seed": "tsx src/db/seed.ts"
   },