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dodoxandClaude Sonnet 5 d73c739492 Fix Login Flow v2 timing out under Docker (single gunicorn worker)
_pending_flows in app/auth.py is an in-memory dict, not shared across
processes. With --workers 2, /auth/login/start and the follow-up
/auth/login/poll calls could land on different worker processes, which
never see each other's flow_id, so login would intermittently or always
time out. Only surfaced under gunicorn (Docker); the dev server is a
single process so it never hit this.

Pin to a single worker (+ threads for request concurrency) so the shared
in-memory state is actually shared. Fine at this scale - household tool,
already SQLite-backed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011b5fAoenyLtvS54oztB7ib
2026-08-30 16:17:53 +02:00

32 lines
1.2 KiB
Docker

FROM python:3.12-slim
WORKDIR /app
# Pillow needs these to build/run; python:3.12-slim's manylinux wheels cover
# most of it, but libjpeg/zlib runtime libs are still needed at import time.
RUN apt-get update && apt-get install -y --no-install-recommends \
libjpeg62-turbo \
zlib1g \
&& rm -rf /var/lib/apt/lists/*
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
RUN mkdir -p instance uploads
EXPOSE 5000
# instance/ (sqlite db) and uploads/ (receipt photos) should be mounted as
# volumes - see docker-compose.yml - so they survive a container rebuild.
#
# --workers 1: the Login Flow v2 poll state (app/auth.py _pending_flows) is
# an in-memory dict, not shared across processes - with >1 worker,
# /auth/login/start and the follow-up /auth/login/poll calls can land on
# different worker processes, which never see each other's flow_id, so
# login intermittently/always times out. Single worker (+ threads for
# concurrency) keeps that state actually shared. Fine for this scale
# (household tool, already SQLite-backed).
CMD ["gunicorn", "--bind", "0.0.0.0:5000", "--workers", "1", "--threads", "4", "--timeout", "60", "run:app"]