Update Dockerfile

Author: XFlexDev

Dockerfile

@@ -1,11 +1,44 @@
-FROM node:20-slim
+# ---------- BUILD STAGE ----------
+FROM node:20-slim AS builder
+
+WORKDIR /app
 
+# Install build deps only for native modules
 RUN apt-get update && apt-get install -y \
-    build-essential cmake python3 make gcc g++ \
+    build-essential \
+    python3 \
+    make \
+    gcc \
+    g++ \
+    cmake \
     && rm -rf /var/lib/apt/lists/*
 
-WORKDIR /app
+# Copy only package files first (better cache)
 COPY package*.json ./
-RUN npm install --omit=dev
+
+# Use npm ci for faster + reproducible builds
+RUN npm ci --omit=dev
+
+# Copy source after deps (max cache efficiency)
 COPY . .
-CMD ["node", "--optimize-for-size", "--max-old-space-size=512", "bot.js"]
+
+# ---------- RUNTIME STAGE ----------
+FROM node:20-slim
+
+WORKDIR /app
+
+# Install tini (important for child process cleanup)
+RUN apt-get update && apt-get install -y tini \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy node_modules + app from builder
+COPY --from=builder /app /app
+
+# Production env
+ENV NODE_ENV=production
+ENV NODE_OPTIONS="--max-old-space-size=512 --optimize-for-size"
+
+# Use tini as PID 1 to properly reap worker processes
+ENTRYPOINT ["/usr/bin/tini", "--"]
+
+CMD ["node", "bot.js"]