Update Dockerfile

Dockerfile

@@ -1,15 +1,19 @@
+# Base Node.js image
 FROM node:18-alpine
 
-# Create app directory
+# Set working directory
 WORKDIR /app
 
-# Copy application files
+# Install necessary tools (git, bash, etc.)
+RUN apk add --no-cache git bash
+
+# Copy application files to container
 COPY . .
 
 # Install dependencies
 RUN yarn install
 
-# Create and set permissions for users.json and users directory
+# Set permissions for users.json and users directory
 RUN touch users.json && \
     chmod 666 users.json && \
     mkdir -p users && \
@@ -18,8 +22,19 @@ RUN touch users.json && \
 # Ensure start.sh is executable
 RUN chmod +x start.sh
 
-# Expose port
+# Create a non-root user and switch to it
+RUN adduser -D appuser
+USER appuser
+
+# Expose application port
 EXPOSE 7860
 
+# Set default environment variables
+ENV NODE_ENV=production
+ENV PORT=7860
+
+# Healthcheck to ensure app is running
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s CMD curl -f http://localhost:7860 || exit 1
+
 # Run start script
 CMD ["sh", "./start.sh"]