dev dockerization

Dockerfile

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+FROM ubuntu:14.04
+
+RUN set -e -x && \
+    apt-get -y update && \
+    apt-get -y install python python-virtualenv build-essential python-dev pwgen && \
+    useradd -rm flask
+
+ADD . /srv/www-main
+WORKDIR /srv/www-main
+
+RUN set -e -x && \
+    chown -R flask:flask /srv/www-main
+
+USER flask
+
+RUN set -e -x && \
+    rm -rf venv && \
+    virtualenv venv && \
+    . venv/bin/activate && \
+    pip install -r requirements.txt && \
+    cp main.cfg.dist main.cfg && \
+    echo "SECRET_KEY=\"$(pwgen 36 1)\"" >> main.cfg
+
+EXPOSE 8080
+
+CMD set -e -x && \
+    . venv/bin/activate && \
+    python main.py
+