add a Dockerfile

Dockerfile

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+FROM python:3.6
+
+# Prepare app dir
+RUN mkdir /app
+WORKDIR /app
+RUN mkdir ./run ./log
+
+# Prepare virtualenv
+RUN python3.6 -m venv ./virtualenv
+RUN ./virtualenv/bin/pip install --upgrade pip setuptools
+
+# Install dependencies
+COPY ./requirements.txt .
+RUN ./virtualenv/bin/pip install -r requirements.txt
+
+# Install application
+COPY README.md setup.py ./
+COPY bin/ ./bin
+COPY fakesmtpd/ ./fakesmtpd
+COPY fakesmtpd_test/ ./fakesmtpd_test
+RUN ./virtualenv/bin/pip install .
+
+# Start eventstreamd
+EXPOSE 25
+COPY start.sh ./
+CMD ["/app/start.sh"]

start.sh

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+#!/bin/sh
+
+set -e
+
+exec /app/virtualenv/bin/fakesmtpd -b 0.0.0.0 | tee /app/log/fakesmtpd