Switch to poetry

Dockerfile

@@ -1,6 +1,34 @@
-FROM python:3.11-alpine
+FROM python:3.12.3-alpine3.18 AS base
+
+FROM base AS builder
+
+ENV PYTHONFAULTHANDLER=1 \
+    PYTHONUNBUFFERED=1 \
+    PYTHONHASHSEED=random \
+    PIP_NO_CACHE_DIR=off \
+    PIP_DISABLE_PIP_VERSION_CHECK=on \
+    PIP_DEFAULT_TIMEOUT=100 \
+    POETRY_NO_INTERACTION=1 \
+    POETRY_VIRTUALENVS_CREATE=false \
+    PATH="$PATH:/runtime/bin" \
+    PYTHONPATH="$PYTHONPATH:/runtime/lib/python3.12/site-packages" \
+    # Versions:
+    POETRY_VERSION=2.1.1
+
+# System deps:
+RUN apk add build-base unzip wget python3-dev libffi-dev rust cargo openssl-dev
+RUN pip install "poetry==$POETRY_VERSION" "poetry-plugin-export"
+
+WORKDIR /src
+
+# Generate requirements and install *all* dependencies.
+COPY pyproject.toml poetry.lock /src/
+RUN poetry export --without-hashes --no-interaction --no-ansi -f requirements.txt -o requirements.txt
+RUN pip install --prefix=/runtime --force-reinstall -r requirements.txt
+
+FROM base AS runtime
+COPY --from=builder /runtime /usr/local
+COPY . /app
 WORKDIR /app
-COPY ./requirements.txt /app/requirements.txt
-RUN pip install --no-cache-dir --upgrade -r /app/requirements.txt
-COPY ./ohayodash /app/ohayodash
-CMD ["gunicorn", "--bind", "0.0.0.0:80", "ohayodash.app:app"]
+EXPOSE 8000/tcp
+CMD ["/usr/local/bin/gunicorn", "ohayodash.app:app", "-b", "0.0.0.0:80"]