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Dockerfile
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Dockerfile
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# syntax = docker/dockerfile:1
# Adjust NODE_VERSION as desired
ARG NODE_VERSION=20.3.0
FROM node:${NODE_VERSION}-slim AS base
LABEL fly_launch_runtime="NodeJS"
# NodeJS app lives here
WORKDIR /app
# Set production environment
ENV NODE_ENV=production
# Throw-away build stage to reduce size of final image
FROM base AS build
# Install node modules
COPY --link package.json package-lock.json ./
RUN npm install --production=false
# Copy application code
COPY --link . .
# Build application
RUN npm run build
# Remove development dependencies
RUN npm prune --production
# Final stage for app image
FROM base
# Copy built application
COPY --from=build /app /app
# Rename .env.production to .env
RUN mv .env.production .env
# Start the server by default, this can be overwritten at runtime
CMD [ "npm", "run", "start" ]