get rid of nginx use

Dockerfile

@@ -1,28 +1,32 @@
-FROM node:18-alpine AS build
+FROM node:18-alpine
 
-# Set working directory
-WORKDIR /app
+# Set up a new user named "user" with user ID 1000
+RUN adduser -D user || adduser -D -u 1001 user
 
-# Copy the viewer directory with all its contents
-COPY viewer/ .
+# Switch to the "user" user
+USER user
 
-# Install dependencies
-RUN npm install
+# Set home to the user's home directory
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
 
-# Build the application
-RUN npm run build || (echo "Build failed. Check the error messages above." && exit 1)
+# Set the working directory
+WORKDIR $HOME/app
 
-# Production stage
-FROM nginx:alpine
+# Copy package files
+COPY --chown=user viewer/package*.json ./
 
-# Copy built assets from build stage
-COPY --from=build /app/dist /usr/share/nginx/html
+# Install dependencies
+RUN npm install
+
+# Copy the rest of the application
+COPY --chown=user viewer/ .
 
-# Copy nginx configuration
-COPY viewer/nginx.conf /etc/nginx/conf.d/default.conf
+# Build the application
+RUN npm run build
 
 # Expose port
 EXPOSE 7860
 
-# Start nginx
-CMD ["nginx", "-g", "daemon off;"]
+# Start the application
+CMD ["npm", "run", "preview", "--", "--port", "7860", "--host"]