🔧 update (dockerfile): upgrade bun version for builder and production stages

Author: warengonzaga

Dockerfile

@@ -1,5 +1,5 @@
 # ── Stage 1: Install + Build ────────────────────────────────────────
-FROM oven/bun:1 AS builder
+FROM oven/bun:1.3.9 AS builder
 
 WORKDIR /app
 
@@ -40,7 +40,7 @@ COPY . .
 RUN bun run build
 
 # ── Stage 2: Production ─────────────────────────────────────────────
-FROM oven/bun:1-slim AS production
+FROM oven/bun:1.3.9-slim AS production
 
 WORKDIR /app