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chore: parametize debian codename #78

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chore: parametize debian codename #78

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chore: parametize debian codename
AkashKumar7902 Sep 22, 2025
1c55d2e
fix: add DNS/NSS configuration to Dockerfile
AkashKumar7902 Oct 14, 2025
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29 changes: 22 additions & 7 deletions flask-mongo/Dockerfile
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Original file line number Diff line number Diff line change
@@ -1,17 +1,32 @@
# Use the official Python image as the base image
FROM python:3.9
# Define an argument for the Debian version with a default value
# This allows you to build for a specific version, e.g., bullseye, bookworm, or trixie
ARG DEBIAN_VERSION=bookworm
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Copilot AI Oct 6, 2025

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[nitpick] Consider using a more stable default like 'bullseye' instead of 'bookworm'. The 'bookworm' codename refers to Debian 12 which is relatively new, and using 'bullseye' (Debian 11) as default would provide better stability for production environments.

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ARG DEBIAN_VERSION=bookworm
ARG DEBIAN_VERSION=bullseye

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# Set the working directory within the container
# Use the argument in the FROM instruction
FROM python:3.9-slim-${DEBIAN_VERSION}

# Set the working directory
WORKDIR /app

# Copy the application code into the container
# Create a non-root user to run the application
RUN addgroup --system appgroup && adduser --system --ingroup appgroup appuser

# Copy the requirements file and install dependencies
# This is done first to leverage Docker's layer caching
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The COPY instruction assumes requirements.txt exists in the build context. Consider adding error handling or documentation about this requirement, as the build will fail if the file doesn't exist.

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# This is done first to leverage Docker's layer caching
# This is done first to leverage Docker's layer caching
# NOTE: requirements.txt must exist in the build context (the directory you run `docker build` from).
# If it is missing, the build will fail at this step.

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COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy the rest of the application code
COPY . .

# Install the required packages
RUN pip3 install -r requirements.txt
# Change ownership of the app directory to the non-root user
RUN chown -R appuser:appgroup /app

# Switch to the non-root user
USER appuser

# Expose the port that the Flask app will run on
EXPOSE 6000

# Start the Flask application
CMD ["python3", "app.py"]
CMD ["python3", "app.py"]