Create Dockerfile

Dockerfile

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+FROM node:20-alpine
+
+WORKDIR /app
+
+# Install system dependencies & optimize npm
+RUN apk add --no-cache git && \
+    npm install -g npm@10.8.2
+
+# Copy package files and install dependencies
+COPY package*.json ./
+RUN npm install --omit=dev && \
+    npm cache clean --force
+
+# Copy application files
+COPY . .
+
+# Create required directories with proper permissions
+RUN mkdir -p \
+    /.auth \
+    ./session \
+    ./downloads \
+    ./auth_info_baileys && \
+    chown -R node:node \
+        /.auth \
+        ./session \
+        ./downloads \
+        ./auth_info_baileys
+
+# Switch to non-root user for security
+USER node
+
+CMD ["node", "src/index.js"]