fix(docker): fix docker-compose startup failures for fresh installs

- Remove dokploy-network external network dependency that breaks
  docker-compose up on fresh installs without the network pre-created
- Fix evolution-manager frontend crash by adding nginx.conf with
  corrected gzip_proxied directive (removes invalid must-revalidate value)
- Add missing POSTGRES_DATABASE, POSTGRES_USERNAME, POSTGRES_PASSWORD
  to .env.example (required by docker-compose postgres service)
- Fix DATABASE_CONNECTION_URI hostname from postgres to evolution-postgres
  to match the docker-compose service name

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.env.example

@@ -52,7 +52,13 @@ DEL_INSTANCE=false
 
 # Provider: postgresql | mysql | psql_bouncer
 DATABASE_PROVIDER=postgresql
-DATABASE_CONNECTION_URI='postgresql://user:pass@postgres:5432/evolution_db?schema=evolution_api'
+DATABASE_CONNECTION_URI='postgresql://user:pass@evolution-postgres:5432/evolution_db?schema=evolution_api'
+
+# Postgres container settings (used by docker-compose)
+POSTGRES_DATABASE=evolution_db
+POSTGRES_USERNAME=user
+POSTGRES_PASSWORD=pass
+
 # Client name for the database connection
 # It is used to separate an API installation from another that uses the same database.
 DATABASE_CONNECTION_CLIENT_NAME=evolution_exchange

docker-compose.yaml

@@ -14,7 +14,6 @@ services:
       - evolution_instances:/evolution/instances
     networks:
       - evolution-net
-      - dokploy-network
     env_file:
       - .env
     expose:
@@ -26,6 +25,8 @@ services:
     restart: always
     ports:
       - "3000:80"
+    volumes:
+      - ./nginx.conf:/etc/nginx/conf.d/nginx.conf:ro
     networks:
       - evolution-net
 
@@ -41,9 +42,6 @@ services:
       evolution-net:
         aliases:
           - evolution-redis
-      dokploy-network:
-        aliases:
-          - evolution-redis
     expose:
       - "6379"
 
@@ -67,7 +65,6 @@ services:
       - postgres_data:/var/lib/postgresql/data
     networks:
       - evolution-net
-      - dokploy-network
     expose:
       - "5432"
 
@@ -79,6 +76,4 @@ volumes:
 networks:
   evolution-net:
     name: evolution-net
-    driver: bridge
+    driver: bridge
-  dokploy-network:
-    external: true

nginx.conf

@@ -0,0 +1,51 @@
+server {
+    listen 80;
+    server_name localhost;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Gzip compression
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_proxied expired no-cache no-store private auth;
+    gzip_types
+        text/plain
+        text/css
+        text/xml
+        text/javascript
+        application/javascript
+        application/xml+rss
+        application/json;
+
+    # Security headers
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header Referrer-Policy "no-referrer-when-downgrade" always;
+    add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'" always;
+
+    # Handle client routing
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Cache static assets
+    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    # Cache HTML files for a shorter period
+    location ~* \.html$ {
+        expires 1h;
+        add_header Cache-Control "public";
+    }
+
+    # Health check endpoint
+    location /health {
+        access_log off;
+        return 200 "healthy\n";
+        add_header Content-Type text/plain;
+    }
+}