first commit

.gitignore

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+# Byte-compiled files
+__pycache__/
+*.py[cod]
+
+# Environment variables
+.env
+
+# Virtual environments
+venv/
+*.venv
+
+# Docker
+*.log
+*.pid
+*.bak
+*.swp
+.dockerignore
+docker-compose.override.yml
+
+# Python package files
+*.egg
+*.egg-info/
+dist/
+build/
+*.pyc
+
+# IDE/Editor files
+.vscode/
+.idea/
+*.iml

Dockerfile

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+# Use the official Python image with a specific version
+FROM python:3.10-slim
+
+# Set the working directory
+WORKDIR /app
+
+# Copy requirements and install them (if there were any)
+COPY requirements.txt /app/
+RUN pip install -r requirements.txt
+
+# Copy the rest of the application code
+COPY . /app
+
+# Expose the port the app runs on
+EXPOSE 5000
+
+# Command to run the application
+CMD ["python", "app.py"]

app.py

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+from flask import Flask
+
+app = Flask(__name__)
+
+@app.route('/')
+def hello_world():
+    return 'Hello, World!'
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=5000)

docker-compose.yml

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+version: '3.8'
+
+services:
+  flask-app:
+    build:
+      context: .
+    ports:
+      - "5000:5000"
+    volumes:
+      - .:/app
+    command: python app.py

requirements.txt

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+flask==2.3.3