0a34949019
* Add production-one-port example A more complex version of simple-one-port that facilitates better layer caching to shorten build times and multi-stage build to reduce final image size. Harder to understand, but ultimately nicer to use. * fix Caddyfile format to avoid complaints * docker-examples: bump all base images to python:3.13
63 lines
2.1 KiB
Docker
63 lines
2.1 KiB
Docker
# This Dockerfile is used to deploy a single-container Reflex app instance
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# to services like Render, Railway, Heroku, GCP, and others.
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# If the service expects a different port, provide it here (f.e Render expects port 10000)
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ARG PORT=8080
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# Only set for local/direct access. When TLS is used, the API_URL is assumed to be the same as the frontend.
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ARG API_URL
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# It uses a reverse proxy to serve the frontend statically and proxy to backend
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# from a single exposed port, expecting TLS termination to be handled at the
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# edge by the given platform.
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FROM python:3.13 as builder
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RUN mkdir -p /app/.web
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RUN python -m venv /app/.venv
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ENV PATH="/app/.venv/bin:$PATH"
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WORKDIR /app
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# Install python app requirements and reflex in the container
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COPY requirements.txt .
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RUN pip install -r requirements.txt
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# Install reflex helper utilities like bun/fnm/node
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COPY rxconfig.py ./
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RUN reflex init
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# Install pre-cached frontend dependencies (if exist)
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COPY *.web/bun.lockb *.web/package.json .web/
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RUN if [ -f .web/bun.lockb ]; then cd .web && ~/.local/share/reflex/bun/bin/bun install --frozen-lockfile; fi
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# Copy local context to `/app` inside container (see .dockerignore)
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COPY . .
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ARG PORT API_URL
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# Download other npm dependencies and compile frontend
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RUN API_URL=${API_URL:-http://localhost:$PORT} reflex export --loglevel debug --frontend-only --no-zip && mv .web/_static/* /srv/ && rm -rf .web
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# Final image with only necessary files
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FROM python:3.13-slim
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# Install Caddy and redis server inside image
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RUN apt-get update -y && apt-get install -y caddy redis-server && rm -rf /var/lib/apt/lists/*
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ARG PORT API_URL
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ENV PATH="/app/.venv/bin:$PATH" PORT=$PORT API_URL=${API_URL:-http://localhost:$PORT} REDIS_URL=redis://localhost PYTHONUNBUFFERED=1
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WORKDIR /app
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COPY --from=builder /app /app
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COPY --from=builder /srv /srv
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# Needed until Reflex properly passes SIGTERM on backend.
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STOPSIGNAL SIGKILL
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EXPOSE $PORT
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# Apply migrations before starting the backend.
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CMD [ -d alembic ] && reflex db migrate; \
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caddy start && \
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redis-server --daemonize yes && \
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exec reflex run --env prod --backend-only
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