added docker for production

.gitignore

@@ -1,2 +1,9 @@
+# Python
 __pycache__/
+*.py[cod]
+
+# Database
 instance/*.db
+
+# Docker
+.env

Dockerfile

@@ -0,0 +1,26 @@
+# Use official Python runtime as base image
+FROM python:3.10-alpine
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE 1
+ENV PYTHONUNBUFFERED 1
+ENV FLASK_ENV production
+
+# Create and set working directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apk add --no-cache gcc musl-dev linux-headers git
+
+# Install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Expose the application port
+EXPOSE 5001
+
+# Run application with Gunicorn
+CMD ["gunicorn", "--bind", "0.0.0.0:5001", "--workers", "4", "app:app"]

README.md

@@ -23,6 +23,7 @@ flask init-db
 
 ## Usage
 
+### Local Development
 ```bash
 # Start development server
 flask run --host=0.0.0.0 --port=5001
@@ -31,8 +32,20 @@ flask run --host=0.0.0.0 --port=5001
 pkill -f "flask run" && flask run --host=0.0.0.0 --port=5001
 ```
 
+### Docker Deployment
+```bash
+# Build and start container
+docker-compose up --build
+
+# For production (detached mode)
+docker-compose up --build -d
+```
+
 The application will be available at `http://localhost:5001`
 
+### Persisting Data
+The database will be preserved between container restarts through the `./instance` volume mount.
+
 ## Features
 - User registration with password confirmation
 - Secure password hashing

docker-compose.yml

@@ -0,0 +1,13 @@
+version: '3.8'
+
+services:
+  web:
+    build: .
+    ports:
+      - "5001:5001"
+    environment:
+      - FLASK_ENV=production
+      - FLASK_SECRET_KEY=${FLASK_SECRET_KEY:-your-secret-key-here}
+      - SQLALCHEMY_DATABASE_URI=sqlite:////app/instance/users.db
+    volumes:
+      - ./instance:/app/instance

requirements.txt

@@ -0,0 +1,5 @@
+flask==3.0.0
+flask-sqlalchemy==3.1.1
+flask-login==0.6.3
+werkzeug==3.0.0
+gunicorn==21.2.0