Update to use non-root user and assign appropriate permissions

Dockerfile

@@ -1,23 +1,31 @@
-FROM node:alpine AS build
+FROM node:latest AS build
 
 WORKDIR /usr/src/bot
 
-RUN apk add --update alpine-sdk libtool autoconf automake python3
+RUN apt-get update && apt-get install -y build-essential libtool autoconf automake python3 
 
 COPY package.json ./
 
 COPY yarn.lock ./
 
+ENV NODE_ENV production
+
 RUN yarn global add node-gyp
 
-RUN yarn install
+RUN yarn install --production
+
+FROM node:21.7.2-bookworm-slim
+
+ENV NODE_ENV production
+
+RUN apt-get update && apt-get install -y dumb-init
 
-FROM node:alpine
+USER node
 
 WORKDIR /usr/src/bot
 
-COPY --from=build /usr/src/bot/node_modules ./node_modules
+COPY --chown=node:node --from=build /usr/src/bot/node_modules ./node_modules
 
-COPY . ./
+COPY --chown=node:node . ./
 
-CMD ["node", "bot.js"]
+CMD ["dumb-init", "node", "bot.js"]