Create Dockerfile

Dockerfile

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+# 1. Nodeでビルド
+FROM node:18-alpine AS builder
+
+RUN apk add --no-cache git python3 make g++ bash findutils
+WORKDIR /app
+COPY . .
+RUN npm install @babel/runtime --save
+
+RUN npm ci --no-audit --no-fund || npm install --no-audit --no-fund
+RUN npm run build
+
+RUN mkdir -p /build_output \
+ && FILE=$(find . -type f -name "eruda-features*.js" | grep -E "dist|build|lib|^\./eruda-features" | head -n1) \
+ && if [ -z "$FILE" ]; then echo "ビルド成果物が見つかりません"; exit 1; fi \
+ && cp "$FILE" /build_output/eruda-features.js
+
+# 2. Python + Flask のランタイム
+FROM python:3.11-slim
+RUN pip install --no-cache-dir flask
+WORKDIR /app
+
+COPY --from=builder /build_output/eruda-features.js /app/static/eruda-features.js
+COPY app.py /app/app.py
+
+EXPOSE 7860
+CMD ["python", "app.py"]