add docker setup

Dockerfile

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+ARG PYTHON_VERSION=3.12
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+FROM python:${PYTHON_VERSION}-slim AS builder
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+WORKDIR /app
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+COPY requirements.txt .
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+RUN pip install -r requirements.txt
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+COPY . .
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+ENV PYTHONUNBUFFERED=1
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+RUN python manage.py migrate
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+FROM python:${PYTHON_VERSION}-slim
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+WORKDIR /app
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+COPY --from=builder /app /app
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+COPY --from=builder /usr/local /usr/local
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+ENV PYTHONUNBUFFERED=1
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+CMD ["python", "manage.py", "runserver", "0.0.0.0:8080"]
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INSTRUCTION.md

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+# ToDo App Docker Instructions
+
+## Build image
+docker build -t todoapp:1.0.0 .
+
+## Run container
+docker run -p 8080:8080 todoapp:1.0.0
+
+## Tag image
+docker tag todoapp:1.0.0 vikkinech/todoapp:1.0.0
+
+## Push to Docker Hub
+docker push vikkinech/todoapp:1.0.0
+
+## Docker Hub repository
+https://hub.docker.com/r/vikkinech/todoapp
+
+## Open in browser
+After running the container, open http://localhost:8080 in your browser.
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+