add comment in Dockerfiles to run workflow

Author: Suraj-kumar00

backend/Dockerfile

@@ -16,6 +16,7 @@ RUN npx prisma generate
 # Stage 2: Production image
 FROM node:18-alpine
 
+# set up the working directory
 WORKDIR /app
 
 ENV NODE_ENV=production

frontend/Dockerfile

@@ -1,6 +1,7 @@
 # Builder stage
 FROM node:18-alpine AS builder
 
+# Set the working directory
 WORKDIR /app
 
 # Copy package.json and package-lock.json first to leverage Docker cache