Feat js peer dockerfile

js-peer/Dockerfile

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+FROM node:20-slim AS builder
+
+# Install dependencies required for building the app
+RUN apt-get update && \
+    apt-get install -y tini && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY package*.json package-lock.json* ./
+RUN npm ci --quiet
+
+RUN npm install --save-dev update-browserslist-db
+RUN npx update-browserslist-db@latest
+
+COPY ./ ./
+RUN npm run build
+RUN npm prune --omit=dev
+
+FROM node:20-slim AS production
+
+ENV NODE_ENV=production
+WORKDIR /app
+
+COPY --from=builder /app/package*.json ./
+COPY --from=builder /app/.next ./.next
+COPY --from=builder /app/out ./out
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/next.config.* ./
+COPY --from=builder /usr/bin/tini /usr/bin/tini
+RUN mkdir ./certificates
+
+RUN npm ci --omit=dev --quiet
+
+EXPOSE 3000
+EXPOSE 9095
+
+# Use tini to handle signals properly, see https://github.com/nodejs/docker-node/blob/main/docs/BestPractices.md#handling-kernel-signals
+ENTRYPOINT ["/usr/bin/tini", "-p", "SIGKILL", "--" ]
+CMD ["npx", "serve@latest", "out"]