Merge pull request 'added dockerfile' (#26) from feature/meetings into main

Reviewed-on: https://gitea.blackbusinesslabs.com/ATTUNE-HEART-THERAPY/alternative-backend-service/pulls/26

dockerfile

@@ -0,0 +1,35 @@
+FROM python:3.11-slim
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Set work directory
+WORKDIR /app
+
+# Install dependencies
+COPY requirements.txt /app/
+RUN pip install --upgrade pip && \
+    pip install -r requirements.txt
+
+# Copy project
+COPY . /app/
+
+# Collect static files
+RUN python manage.py collectstatic --noinput
+
+# Expose port
+EXPOSE 8000
+
+# Run gunicorn
+CMD ["gunicorn", "booking_system.wsgi:application", "--bind", "0.0.0.0:8000"]
+```
+
+**Optional: Create `.dockerignore`:**
+```
+*.pyc
+__pycache__
+db.sqlite3
+.env
+.git
+venv/