Dockerfile for automated docker deployment (#1)

* Initial Dockerfile

* Dockerfile: install without caching in production

* dockerfile: added ARG/ENV for deployment dir

* dockerfile: removed unnecessary tinkering with PYTHONPATH

* dockerfile: added ARG/ENV for listening port

* dockerfile: added cleanup of tests and makefile

* dockerfile: added health check

Dockerfile

@@ -0,0 +1,67 @@
+ARG DEPLOY_DIR=/opt/om-parser-stw-potsdam-v2
+ARG LISTEN_PORT=3080
+
+# Build & test container
+FROM python:2.7-alpine as buildsys
+ARG DEPLOY_DIR
+
+# Install required dependencies
+RUN apk add make
+RUN pip install pipenv
+
+# Add app user
+RUN adduser -D flaskd
+
+# Create app folder
+RUN mkdir -p ${DEPLOY_DIR}
+WORKDIR ${DEPLOY_DIR}
+
+# Copy app folder contents
+COPY stw_potsdam/ ./stw_potsdam
+COPY tests ./tests
+COPY Makefile .
+COPY Pipfile .
+COPY Pipfile.lock .
+
+# Apply app user to app folder
+RUN chown -R flaskd:flaskd .
+
+# Prepare environment
+USER flaskd
+
+# Install environment
+RUN pipenv install --two --dev
+
+# Run tests
+RUN make test
+
+
+# Executable container
+
+FROM python:2.7-alpine
+
+ARG DEPLOY_DIR
+ARG LISTEN_PORT
+
+ENV LISTEN_PORT=$LISTEN_PORT
+ENV LISTEN=0.0.0.0:$LISTEN_PORT
+
+RUN apk add --no-cache uwsgi uwsgi-python curl
+RUN pip install pipenv
+RUN adduser -D flaskd
+
+COPY --from=buildsys ${DEPLOY_DIR} ${DEPLOY_DIR}
+
+WORKDIR ${DEPLOY_DIR}
+RUN rm -rf ./tests ./Makefile
+RUN chown -R flaskd:flaskd .
+
+USER flaskd
+
+ENV PIPENV_VENV_IN_PROJECT=1
+RUN pipenv install --two --deploy
+
+EXPOSE $LISTEN_PORT
+CMD pipenv run uwsgi --master --http11-socket $LISTEN --plugins python --protocol uwsgi --wsgi stw_potsdam.views:app --virtualenv ./.venv
+
+HEALTHCHECK --interval=15s --timeout=3s CMD curl -f http://127.0.0.1:$LISTEN_PORT/health_check || exit 1

stw_potsdam/views.py

@@ -54,3 +54,7 @@ def canteen_feed(canteen_name):
     canteen = config[canteen_name]
     menu = get_menu_cached(canteen)
     return canteen_feed_xml(canteen, menu)
+
+@app.route('/health_check')
+def health_check():
+    return make_response("OK", 200)