Dockerfile

# syntax = docker/dockerfile:1

# Adjust NODE_VERSION as desired
ARG NODE_VERSION=20
FROM node:${NODE_VERSION} as base

LABEL fly_launch_runtime="Next.js"

# Next.js app lives here
WORKDIR /app

ARG NEXT_PUBLIC_PUSHER_KEY
ARG NEXT_PUBLIC_PUSHER_CLUSTER
ARG SENTRY_RELEASE
ARG NODE_ENV
ARG NEXT_PUBLIC_DOMAIN
ARG NEXT_PUBLIC_IMGIX_URL

# Set environment variables based on arguments
ENV NEXT_PUBLIC_PUSHER_KEY=$NEXT_PUBLIC_PUSHER_KEY
ENV NEXT_PUBLIC_PUSHER_CLUSTER=$NEXT_PUBLIC_PUSHER_CLUSTER
ENV SENTRY_RELEASE=$SENTRY_RELEASE
ENV NODE_ENV=$NODE_ENV
ENV NEXT_PUBLIC_DOMAIN=$NEXT_PUBLIC_DOMAIN
ENV NEXT_PUBLIC_IMGIX_URL=$NEXT_PUBLIC_IMGIX_URL

# Throw-away build stage to reduce size of final image
FROM base as build

# Install packages needed to build node modules
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y build-essential node-gyp pkg-config python-is-python3

# Install node modules
COPY package-lock.json package.json ./
RUN npm ci --include=dev

# Copy application code
COPY . .

# Use all secrets from the build context
RUN --mount=type=secret,id=ALL_SECRETS \
    eval "$(base64 -d /run/secrets/ALL_SECRETS)" && \
    echo "Using secrets during build!" && \
    npx prisma generate && \
    npm run build

# Remove development dependencies
RUN npm prune --omit=dev


# Final stage for app image
FROM base

# Copy built application
COPY --from=build /app /app

# Start the server by default, this can be overwritten at runtime
EXPOSE 3000
CMD [ "npm", "run", "start" ]