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# Leichtes Node-Image
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FROM node:22-alpine
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# Arbeitsverzeichnis im Container
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WORKDIR /app
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# package.json & package-lock.json zuerst kopieren (für Docker-Cache)
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COPY package.json package-lock.json* ./
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# Dependencies installieren
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RUN npm install --production
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# Restlichen Code kopieren
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COPY . .
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# Port für Express
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EXPOSE 3000
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# Startkommando
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CMD ["node", "server.js"]
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