port corrected for service

Dockerfile

@@ -5,24 +5,26 @@ FROM python:3.10-slim-buster
 WORKDIR /app
 
 # Copy the current directory contents into the container at /app
-ADD . /app
+COPY . /app
 
 # Update and install system libraries
 RUN apt-get update && apt-get install -y \
     ghostscript \
     --no-install-recommends && \
     rm -rf /var/lib/apt/lists/*
 
-
 # Install Poetry
 RUN pip install poetry
 
 # Install project dependencies
 RUN poetry config virtualenvs.create false \
   && poetry install --no-interaction --no-ansi
 
-# Make port 80 available to the world outside this container
-EXPOSE 8000
+# Set the default port as an environment variable
+ENV PORT=8000
+
+# Expose the port defined by the environment variable
+EXPOSE $PORT
 
-# Run app.py when the container launches
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]
+# Run the uvicorn command with the PORT environment variable
+CMD uvicorn main:app --host 0.0.0.0 --port $PORT