Updated dockerfile for new file structure

docker/Dockerfile

@@ -1,30 +1,30 @@
 # Build frontend
 FROM node:18-alpine AS frontend-build
 WORKDIR /app
-COPY frontend/package*.json ./frontend/
-RUN npm --prefix frontend install
-COPY frontend/ ./frontend/
-RUN npm --prefix frontend run build
+COPY package*.json ./
+RUN npm install
+COPY ./ ./
+RUN npm run build
 
 # Build backend
 FROM node:18-alpine AS backend-build
 WORKDIR /backend
-COPY backend/package*.json ./
+COPY package*.json ./
 RUN npm install
-COPY backend/ .
+COPY src/backend src/backend
 
 # Configure nginx
 FROM nginx:alpine
 
 RUN apk add --no-cache nodejs npm
 COPY docker/nginx.conf /etc/nginx/nginx.conf
-COPY --from=frontend-build /app/frontend/dist /usr/share/nginx/html
-COPY --from=backend-build src/backend/ /src/backend/
-COPY --from=backend-build src/backend/entrypoint.sh /src/backend/entrypoint.sh
+COPY --from=frontend-build /app/dist /usr/share/nginx/html
+COPY --from=backend-build /backend /backend
+COPY --from=backend-build /backend/entrypoint.sh /backend/entrypoint.sh
 
 # Configure start-up
 RUN chmod +x /backend/entrypoint.sh
-ENTRYPOINT ["/src/backend/entrypoint.sh"]
+ENTRYPOINT ["/backend/entrypoint.sh"]
 
 EXPOSE 8080
 EXPOSE 8081