Update Dockerfile

Dockerfile

@@ -1,19 +1,20 @@
 FROM node:lts-buster
 
 RUN apt-get update && \
-apt-get install -y \
-ffmpeg \
-imagemagick \
-webp && \
-apt-get upgrade -y && \
-rm -rf /var/lib/apt/lists/*
+  apt-get install -y \
+  ffmpeg \
+  imagemagick \
+  webp && \
+  apt-get upgrade -y && \
+  rm -rf /var/lib/apt/lists/*
 
 COPY package.json .
 
-RUN npm install && npm install qrcode-terminal
+RUN npm install && npm install -g qrcode-terminal pm2
 
 COPY . .
 
-EXPOSE 5000
+EXPOSE 3000
 
-CMD ["node", "index.js"]
+
+CMD ["pm2-runtime", "start", "index.js"]