Parameterize coolify.yml env vars

coolify.yml

@@ -2,9 +2,9 @@ apps:
   - name: gob-alert-postgres
     image: postgres:15-alpine
     env:
-      POSTGRES_USER: gob
-      POSTGRES_PASSWORD: gobpass
-      POSTGRES_DB: gob_alert
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_DB}
 
   - name: gob-alert-redis
     image: redis:7-alpine
@@ -14,9 +14,9 @@ apps:
     dockerfile: Dockerfile
     env:
       - key: DATABASE_URL
-        value: postgres://gob:gobpass@gob-alert-postgres:5432/gob_alert
+        value: ${DATABASE_URL}
       - key: API_ADMIN_KEY
-        value: changeme
+        value: ${API_ADMIN_KEY}
     ports:
       - 3000
 
@@ -25,11 +25,15 @@ apps:
     dockerfile: Dockerfile
     env:
       - key: API_URL
-        value: http://gob-alert-api:3000
+        value: ${API_URL}
     ports:
-      - 3001
+      - 3000
 
 notes: |
   This file provides a simple mapping for Coolify to build and deploy services from this repository.
-  Adjust `DATABASE_URL` host when Coolify provides internal network hostnames. Use the Coolify UI
-  to set secrets/variables in the target environment.
+  Set required variables in Coolify (Project → Environment Variables):
+  - POSTGRES_USER, POSTGRES_PASSWORD, POSTGRES_DB
+  - DATABASE_URL (example: postgres://gob:***@gob-alert-postgres:5432/gob_alert)
+  - API_ADMIN_KEY
+  - API_URL (example: http://gob-alert-api:3000)
+  For production, keep the API internal (no public domain) and attach the domain to the web service.