Add a multi stage docker file for deploy

.dockerignore

@@ -0,0 +1,15 @@
+.git
+.dockerignore
+.gitignore
+.drone.yml
+.editorconfig
+.envrc
+.flake8
+dist/
+
+__pycache__/
+*.py[cod]
+*$py.class
+.pytest_cache/
+.venv
+venv

Dockerfile

@@ -0,0 +1,31 @@
+FROM python:3.9-slim-buster as base
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1
+
+WORKDIR /app
+
+FROM base as builder
+
+ENV PIP_DEFAULT_TIMEOUT=100 \
+    PIP_NO_CACHE_DIR=off \
+    POETRY_VERSION=1.1.4 \
+    GUNICORN_VERSION=20.1.0
+
+RUN pip install "poetry==$POETRY_VERSION" \
+    && python -m venv /venv
+
+COPY pyproject.toml poetry.lock ./
+RUN poetry export -f requirements.txt | /venv/bin/pip install -r /dev/stdin \
+    && /venv/bin/pip install "gunicorn==$GUNICORN_VERSION"
+
+COPY . .
+
+RUN poetry build && /venv/bin/pip install dist/*.whl
+
+FROM base as final
+
+COPY --from=builder /venv /venv
+COPY extra/entrypoint.sh ./
+
+CMD ["./entrypoint.sh"]

extra/entrypoint.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -e
+
+. /venv/bin/activate
+
+poetrybot &
+
+exec gunicorn --log-file=- \
+    --worker-tmp-dir /dev/shm \
+    --bind 0.0.0.0:5000 \
+    --forwarded-allow-ips='*' \
+    poetrybot.web.wsgi:app

src/poetrybot/web/wsgi.py

@@ -1,5 +1,6 @@
 from .application import create_app
 
+app = create_app()
+
 if __name__ == "__main__":
-    app = create_app()
     app.run()