# Use an official Python runtime as a parent image
FROM python:3.10-slim

# Set the working directory in the container
WORKDIR /app

# Copy the requirements file into the container at /app
COPY requirements.txt .

# Install any needed packages specified in requirements.txt
# --no-cache-dir: Disables the cache to reduce image size
# -r requirements.txt: Installs packages from the given requirements file
RUN pip install --no-cache-dir -r requirements.txt

# Copy the main application file into the container at /app
COPY main.py .

# Make port 8000 available to the world outside this container
EXPOSE 8000

# Define the command to run the application
# uvicorn main:app starts the server
# --host 0.0.0.0 makes it accessible from outside the container
# --port 8000 specifies the port to run on
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]