chore(docker): Update production compose for custom build and port 3001

- Switch from official chatwoot image to custom build (includes LeadMail, translations, branding)
- Change Rails port from 3001 to avoid conflict with Gitea on 3000
- Use environment variable for POSTGRES_PASSWORD instead of empty default

docker-compose.production.yaml

@@ -2,7 +2,9 @@ version: '3'
 
 services:
   base: &base
-    image: chatwoot/chatwoot:latest
+    build:
+      context: .
+      dockerfile: docker/Dockerfile
     env_file: .env ## Change this file for customized env variables
     volumes:
       - storage_data:/app/storage
@@ -13,7 +15,7 @@ services:
       - postgres
       - redis
     ports:
-      - '127.0.0.1:3000:3000'
+      - '127.0.0.1:3001:3000'
     environment:
       - NODE_ENV=production
       - RAILS_ENV=production
@@ -44,8 +46,7 @@ services:
     environment:
       - POSTGRES_DB=chatwoot
       - POSTGRES_USER=postgres
-      # Please provide your own password.
-      - POSTGRES_PASSWORD=
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
 
   redis:
     image: redis:alpine