chore: run web service with bun runtime

stack.yml

@@ -3,7 +3,7 @@ version: "3.8"
 
 services:
   web:
-    image: node:20-bullseye
+    image: oven/bun:1.3.1
     # Run as non-root to avoid creating root-owned files on host mounts
     user: "1000:1000"
     working_dir: /app
@@ -14,7 +14,7 @@ services:
       - sistema_db:/app/data
     environment:
       NODE_ENV: "production"
-      PNPM_STORE_DIR: "/tmp/pnpm-store"
+      BUN_INSTALL_CACHE_DIR: "/tmp/bun-cache"
       # Garante instalação de devDependencies para o build (prisma CLI)
       NPM_CONFIG_PRODUCTION: "false"
       # IMPORTANTE: "NEXT_PUBLIC_*" é consumida pelo navegador (cliente). Use a URL pública do Convex.
@@ -35,6 +35,9 @@ services:
         parallelism: 1
         order: start-first
         failure_action: rollback
+      resources:
+        limits:
+          memory: "2G"
       restart_policy:
         condition: any
       placement:
@@ -78,6 +81,9 @@ services:
         parallelism: 1
         order: start-first
         failure_action: rollback
+      resources:
+        limits:
+          memory: "4G"
       restart_policy:
         condition: any
       placement: