Autobuild docker imahe for application

cntmanage/docker/flightslot.Dockerfile

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+### STAGE 1 - Builder image ###
+# Builder container
+FROM python:3.12 AS builder
+# Install Poetry
+RUN curl -sSL https://install.python-poetry.org | python3 -
+ENV PATH="${PATH}:/root/.local/bin"
+RUN env
+# Create build directory
+WORKDIR /build
+# Copy project files
+COPY . ./
+# Run poetry update to download dependencies
+RUN poetry update --no-interaction --no-ansi
+# Build project
+RUN poetry build
+
+### STAGE 2 — Final image
+FROM python:3.12-slim AS deploy
+
+WORKDIR /app
+
+# Copy application custom static files
+RUN mkdir -p static
+COPY ./static/cantorair.jpg ./static
+
+# Copy application custom templates for admin page
+RUN mkdir -p /templates/admin
+COPY ./templates/admin/* ./templates/admin/
+
+# Copy and install application wheel package
+COPY --from=builder /build/dist/*.whl ./
+RUN pip install --no-cache-dir *.whl
+RUN pip install gunicorn whitenoise
+
+# Copy entryupoint bash script
+COPY ./docker/entrypoint.sh ./
+ENTRYPOINT ["/app/entrypoint.sh"]
+
+# Command to be executed after entry point 
+CMD ["gunicorn", "cntmanage.wsgi:application", "--bind", "0.0.0.0:8000"]