Add multi-stage build to Flutter Dockerfile
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# Frontend Dockerfile for Chitfund (Flutter Web)
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FROM node:20-slim
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FROM ghcr.io/cirruslabs/flutter:3.24.0 AS build
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WORKDIR /app
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# We serve the build/web directory.
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# NOTE: This Dockerfile assumes you have already run 'flutter build web'
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# or we will use a multi-stage build if you prefer.
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# For simplicity in this home lab, we copy the build output.
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COPY package*.json ./
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RUN npm install express
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COPY . .
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RUN flutter pub get
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RUN flutter build web --release
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FROM node:20-slim
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WORKDIR /app
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RUN npm init -y && npm install express
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COPY --from=build /app/build/web ./build/web
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COPY web-server.js .
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EXPOSE 8080
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