Dockerfile

FROM node:20-alpine

WORKDIR /app

COPY package.json ./
RUN npm install --omit=dev

# Stub onnxruntime-node -> onnxruntime-web
RUN rm -rf node_modules/onnxruntime-node/bin && \
    echo '{"name":"onnxruntime-node","main":"index.js","version":"0.0.0"}' > node_modules/onnxruntime-node/package.json && \
    echo 'module.exports = require("onnxruntime-web");' > node_modules/onnxruntime-node/index.js

# Copy WASM files locally
RUN cp node_modules/onnxruntime-web/dist/*.wasm node_modules/@xenova/transformers/dist/ 2>/dev/null || true

COPY server.js ./

EXPOSE 3000
CMD ["node", "server.js"]