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# source: https://github.com/svx/poetry-fastapi-docker
# Dockerfile
# Uses multi-stage builds requiring Docker 17.05 or higher
# See https://docs.docker.com/develop/develop-images/multistage-build/
# Creating a python base with shared environment variables
FROM python:3.10-slim-bullseye AS python-base
ENV PYTHONUNBUFFERED=1 \
PYTHONDONTWRITEBYTECODE=1 \
PIP_NO_CACHE_DIR=off \
PIP_DISABLE_PIP_VERSION_CHECK=on \
PIP_DEFAULT_TIMEOUT=100 \
POETRY_HOME="/opt/poetry" \
POETRY_VIRTUALENVS_IN_PROJECT=true \
POETRY_NO_INTERACTION=1 \
PYSETUP_PATH="/opt/pysetup" \
VENV_PATH="/opt/pysetup/.venv"
ENV PATH="$POETRY_HOME/bin:$VENV_PATH/bin:$PATH"
# builder-base is used to build dependencies
FROM python-base AS builder-base
RUN buildDeps="build-essential" \
&& apt-get update \
&& apt-get install --no-install-recommends -y \
curl \
vim \
netcat \
&& apt-get install -y --no-install-recommends $buildDeps \
&& rm -rf /var/lib/apt/lists/*
# Install Poetry - respects $POETRY_VERSION & $POETRY_HOME
ENV POETRY_VERSION=1.2.1
SHELL ["/bin/bash", "-o", "pipefail", "-c"]
RUN curl -sSL https://install.python-poetry.org | POETRY_HOME=${POETRY_HOME} python3 - --version ${POETRY_VERSION} && \
chmod a+x /opt/poetry/bin/poetry
# We copy our Python requirements here to cache them
# and install only runtime deps using poetry
WORKDIR $PYSETUP_PATH
COPY ./poetry.lock ./pyproject.toml ./
RUN poetry install --only main # respects
# 'development' stage installs all dev deps and can be used to develop code.
# For example using docker-compose to mount local volume under /app
FROM python-base as development
ENV FASTAPI_ENV=development
# Copying poetry and venv into image
COPY --from=builder-base $POETRY_HOME $POETRY_HOME
COPY --from=builder-base $PYSETUP_PATH $PYSETUP_PATH
# Copying in our entrypoint
COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh
# venv already has runtime deps installed we get a quicker install
WORKDIR $PYSETUP_PATH
RUN poetry install
WORKDIR /app
COPY . .
EXPOSE 8000
ENTRYPOINT /docker-entrypoint.sh $0 $@
CMD ["uvicorn", "--reload", "--host=0.0.0.0", "--port=8000", "main:app"]
# 'production' stage uses the clean 'python-base' stage and copyies
# in only our runtime deps that were installed in the 'builder-base'
FROM python-base AS production
ENV FASTAPI_ENV=production
COPY --from=builder-base $VENV_PATH $VENV_PATH
COPY gunicorn_conf.py /gunicorn_conf.py
COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh
# Create user with the name poetry
RUN groupadd -g 1500 poetry && \
useradd -m -u 1500 -g poetry poetry
COPY --chown=poetry:poetry ./src /app
USER poetry
WORKDIR /app
ENTRYPOINT /docker-entrypoint.sh $0 $@
CMD [ "gunicorn", "--worker-class uvicorn.workers.UvicornWorker", "--config /gunicorn_conf.py", "main:app"]