Try arm64 build

Dockerfile

@@ -1,41 +1,38 @@
 # ── Stage 1: Build frontend ──────────────────────────────────────────────────
-FROM node:20-alpine AS builder
+FROM node:20-bullseye-slim AS builder
 
 WORKDIR /app
 
-# Install build tools needed for native modules and frontend build
+# Install build tools and sqlite headers for native modules
-RUN apk add --no-cache python3 build-base sqlite-dev
+RUN apt-get update && apt-get install -y --no-install-recommends \
+		python3 build-essential libsqlite3-dev ca-certificates \
+	&& rm -rf /var/lib/apt/lists/*
 
 COPY package.json package-lock.json* ./
 RUN npm ci
 
 COPY . .
 RUN npm run build
+# Produce production node_modules (compile native modules here for the target arch)
+RUN npm ci --omit=dev && npm cache clean --force
 
 # ── Stage 2: Production image ───────────────────────────────────────────────
-FROM node:20-alpine
+
+FROM node:20-bullseye-slim
 
 # Allow forcing build from source (useful when prebuilt binaries are not available)
 ARG BUILD_FROM_SOURCE=false
 ENV npm_config_build_from_source=${BUILD_FROM_SOURCE}
 
-# Install build tools and sqlite dev headers for compiling native modules
-RUN apk add --no-cache python3 build-base sqlite-dev
-
 WORKDIR /app
 
-COPY package.json package-lock.json* ./
+# Copy production node_modules and built frontend from builder stage
-RUN npm ci --omit=dev && npm cache clean --force
+COPY --from=builder /app/node_modules ./node_modules
-
+COPY --from=builder /app/dist ./dist
-# Remove build tools after install to keep image smaller
-RUN apk del build-base python3
 
 # Copy server code
 COPY server/ ./server/
 
-# Copy built frontend from builder stage
-COPY --from=builder /app/dist ./dist
-
 # Create uploads directory
 RUN mkdir -p uploads/avatars uploads/branding