added environment slug

.do/deploy.template.yaml

@@ -1,10 +1,11 @@
 spec:
   name: medusa-app
   services:
-    - name: medusa-server
-      git:
-        repo_clone_url: https://github.com/medusajs/medusa-starter-default.git
-        branch: feat-deploy-digitalocean
+  - name: medusa-server
+    environment_slug: node-js
+    git:
+      repo_clone_url: https://github.com/medusajs/medusa-starter-default.git
+      branch: feat-deploy-digitalocean
     envs:
     - key: DB_USERNAME
       value: ${db.USERNAME}
@@ -24,8 +25,10 @@ spec:
       value: secret
     - key: NPM_CONFIG_PRODUCTION
       value: false
-    databases:
-    - name: db
-      engine: PG
-    - name: redis-db
-      engine: REDIS
+    routes:
+    - path: /
+  databases:
+  - name: db
+    engine: PG
+  - name: redis-db
+    engine: REDIS