diff --git a/Dockerfile b/Dockerfile
index 2374b24..22b31ed 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,14 @@
 # ── Stage 1: Build ──────────────────────────────────────────────
-FROM node:22-alpine AS builder
+# Utiliser Debian (slim) pour builder ET runtime → même libc (glibc)
+# Évite l'incompatibilité musl/glibc avec better-sqlite3 (addon natif)
+FROM node:22-slim AS builder
 
 WORKDIR /app
 
 # Install build dependencies for better-sqlite3 (native addon)
-RUN apk add --no-cache python3 make g++
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    python3 make g++ \
+    && rm -rf /var/lib/apt/lists/*
 
 COPY package.json package-lock.json ./
 RUN npm ci
@@ -17,7 +21,6 @@ FROM node:22-slim
 
 WORKDIR /app
 
-# better-sqlite3 needs shared libs available in slim
 RUN apt-get update && apt-get install -y --no-install-recommends \
     tini \
     && rm -rf /var/lib/apt/lists/*