feat: Add Docker support for disability-max-ratings-api

This PR adds Docker support to run the disability-max-ratings-api service in a containerized environment.

- Added `Dockerfile` with Python 3.12.3 and Poetry setup
- Added `docker-compose.yml` for local development
- Added healthcheck to monitor service availability
- Fixed Poetry configuration in `pyproject.toml`
  - Added required `authors` field
  - Removed unsupported `package-mode` field

1. Build and start the container:
```bash
docker compose up --build
```

2. Test the API health/docs:
```bash
curl http://localhost:8130/docs
```

3. Test the API endpoint with a sample request:
```bash
curl -X POST http://localhost:8130/disability-max-ratings/ \
  -H "Content-Type: application/json" \
  -d '{"diagnostic_codes": [6260]}'
```

Expected response:
```json
{
    "ratings": [
        {
            "diagnostic_code": 6260,
            "max_rating": 10
        }
    ]
}
```

4. Monitor container health:
```bash
docker compose ps
```

- Uses Python slim base image to minimize container size
- Installs only production dependencies with `--only main`
- Configures Poetry to run without virtual environments in container
- Exposes port 8130 for API access
- Includes curl for healthcheck functionality
- Mounts local directory for development convenience

- Runs with `no-new-privileges` security option
- Cleans up apt cache to reduce image size
- Uses official Python base image
```

.python-version

@@ -0,0 +1 @@
+3.12.3

Dockerfile

@@ -0,0 +1,30 @@
+FROM python:3.12.3-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && \
+    apt-get install -y curl && \
+    rm -rf /var/lib/apt/lists/*
+
+# Install poetry
+RUN pip install poetry==1.7.1
+
+# Copy poetry files
+COPY pyproject.toml poetry.lock ./
+
+# Configure poetry
+RUN poetry config virtualenvs.create false && \
+    poetry config warnings.export false
+
+# Install dependencies
+RUN poetry install --only main --no-interaction --no-ansi
+
+# Copy application code
+COPY . .
+
+# Expose the port the app runs on
+EXPOSE 8130
+
+# Command to run the application
+CMD ["poetry", "run", "uvicorn", "src.python_src.api:app", "--host", "0.0.0.0", "--port", "8130"]

docker-compose.yml

@@ -0,0 +1,19 @@
+services:
+  api:
+    build: .
+    container_name: disability-max-ratings-api
+    ports:
+      - "8130:8130"
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8130/docs"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+    restart: unless-stopped
+    environment:
+      - ENV=local
+    volumes:
+      - .:/app
+    security_opt:
+      - no-new-privileges:true