Dockerfile.prod

# Builder stage for compiling dependencies
FROM python:3.11-alpine3.20 AS builder

# Install geos-dev and alpine-sdk (which contains the compilers needed for building wheels)
RUN apk update && \
    apk upgrade && \
    apk add geos-dev alpine-sdk

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

# Create venv
RUN python -m venv /opt/venv
# Make sure to use the venv
ENV PATH="/opt/venv/bin:$PATH"

# Install dependencies to venv
COPY requirements.txt .
RUN pip install -r requirements.txt


# Actual application runtime stage (without build dependencies)
FROM python:3.11-alpine3.20 AS runtime

# Install geos at system level (needed as a sub-dependency of mapbox-vector-tile)
RUN apk update && \
    apk upgrade && \
    apk add geos

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

WORKDIR /app

# Copy venv with installed dependencies from the builder stage
COPY --from=builder /opt/venv /opt/venv

# Make sure to use the venv
ENV PATH="/opt/venv/bin:$PATH"

# Copy application code
COPY . /app

EXPOSE 5000
CMD ["gunicorn", "--bind", "0.0.0.0:5000", "app:app"]