Update Dockerfile

Dockerfile

@@ -1,6 +1,7 @@
 
 FROM node:lts-buster
 
+Install Git and other dependencies
 RUN apt-get update && \
     apt-get install -y \
     git \
@@ -10,13 +11,13 @@ RUN apt-get update && \
     apt-get upgrade -y && \
     rm -rf /var/lib/apt/lists/*
 
+Copy package.json and install dependencies
 COPY package.json .
-
 RUN npm install && npm install -g qrcode-terminal pm2
 
+Copy application code
 COPY . .
 
+Expose port and set command
 EXPOSE 3000
-
 CMD ["pm2-runtime", "start", "index.js"]
-