created project

.dockerignore

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+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.git
+.gitignore
+.env
+venv/
+.venv/

Dockerfile

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+# Use an official lightweight Python image
+FROM python:3.12-slim
+
+# Prevent Python from writing .pyc files and enable real-time logging
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Set the working directory inside the container
+WORKDIR /code
+
+# Copy only the dependency definitions to maximize Docker cache utilization
+COPY ./requirements.txt /code/requirements.txt
+
+# Install the application dependencies
+RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
+
+# Copy the rest of the application code
+COPY ./app /code/app
+
+# Run the FastAPI application using the official CLI
+CMD ["fastapi", "run", "app/main.py", "--port", "80"]

app/main.py

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+from fastapi import FastAPI
+
+# Создаем само приложение
+app = FastAPI()
+
+# Вешаем обработчик на главную страницу
+@app.get("/")
+def read_root():
+    return {"message": "Hello, world!"}