FROM python:3.8-bullseye

COPY ./requirements.txt /app/requirements.txt


RUN pip install --upgrade pip
RUN pip install wheel
RUN pip install -r /app/requirements.txt
RUN pip install gunicorn uvicorn

RUN curl --location https://raw.githubusercontent.com/vishnubob/wait-for-it/81b1373f17855a4dc21156cfe1694c31d7d1792e/wait-for-it.sh > /usr/bin/wait-for-it \
    && chmod +x  /usr/bin/wait-for-it

COPY . /app

EXPOSE 8000

WORKDIR /app

CMD [ \
    "/usr/bin/wait-for-it", "postgres:5432", "--timeout=45", "--strict", \
    "--", \
    "sh", "-c", \
    # might use exact migration hash here instead of upgrading to the latest "heads"
    "alembic upgrade heads \
    && \
    cd / \
    && \
    gunicorn --workers=2 --worker-class=app.util.MyUvicornWorker --bind=0.0.0.0:8000 \
    app.main:app" \
]