Initial FastAPI application

Dockerfile

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+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY ./app ./app
+
+EXPOSE 8000
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

app/main.py

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+from fastapi import FastAPI
+
+app = FastAPI(
+    title="FastAPI Demo",
+    description="My first application with FastAPI",
+    version="1.0.0",
+)
+
+
+@app.get("/")
+async def root():
+    return {
+        "message": "Hello from FastAPI!",
+        "application": "fastapi-demo",
+        "version": "1.0.0",
+    }
+
+
+@app.get("/health")
+async def health():
+    return {"status": "ok"}
+
+
+@app.get("/hello/{name}")
+async def hello(name: str):
+    return {"message": f"Hello, {name}!"}

compose.yml

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+services:
+  app:
+    build: .
+    container_name: fastapi-demo
+    restart: unless-stopped
+    ports:
+      - "8000:8000"

requirements.txt

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+annotated-doc==0.0.5
+annotated-types==0.7.0
+anyio==4.12.1
+certifi==2026.10.23
+click==8.1.8
+exceptiongroup==1.3.1
+fastapi==0.128.8
+h11==0.16.0
+httpcore==1.0.9
+httptools==0.9.0
+httpx==0.28.1
+idna==3.20
+iniconfig==2.1.0
+packaging==26.3
+pluggy==1.6.0
+pydantic==2.13.5
+pydantic_core==2.46.5
+Pygments==2.21.0
+pytest==8.4.2
+python-dotenv==1.2.1
+PyYAML==6.0.3
+starlette==0.49.3
+tomli==2.5.0
+typing-inspection==0.4.2
+typing_extensions==4.16.0
+uvicorn==0.39.0
+uvloop==0.23.0
+watchfiles==1.1.1
+websockets==15.0.1

tests/test_main.py

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+from fastapi.testclient import TestClient
+
+from app.main import app
+
+client = TestClient(app)
+
+
+def test_root():
+    response = client.get("/")
+    assert response.status_code == 200
+    assert response.json()["message"] == "Hello from FastAPI!"
+
+
+def test_health():
+    response = client.get("/health")
+    assert response.status_code == 200
+    assert response.json() == {"status": "ok"}
+
+
+def test_hello():
+    response = client.get("/hello/Artem")
+    assert response.status_code == 200
+    assert response.json() == {"message": "Hello, Artem!"}