feature: Initial Dockerfile to use.

Author: playpauseandstop

Dockerfile

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+FROM python:3.7.3-slim-stretch
+
+RUN pip install pip==19.1 pre-commit==1.15.2
+
+ENV POETRY_VERSION=0.12.14
+RUN apt update && apt install -y curl
+RUN curl -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py | python
+
+ENV PATH="/root/.poetry/bin:${PATH}"
+
+CMD ["python3"]

README.md

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+# docker-python
+
+Add poetry, pre-commit, and other dev-tools to official Python slim stretch
+Docker image.
+
+## Usage
+
+```
+FROM playpauseandstop/docker-python
+```
+
+## Development
+
+To build an image:
+
+```bash
+docker build -t playpauseandstop/docker-python .
+```
+
+To run something, using given image:
+
+```bash
+docker run --rm -it playpauseandstop/docker-python <cmd>
+```