Added Docker container for the-engine

Dockerfile

+# Copyright (c) 2020:
+#  Deutsches GeoForschungsZentrum GFZ <https://www.gfz-potsdam.de>
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or (at
+# your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see http://www.gnu.org/licenses/.
+
+FROM debian:bullseye-slim
+
+# Install dependencies
+RUN export DEBIAN_FRONTEND=noninteractive && \
+    apt-get update --yes --fix-missing && apt-get upgrade --yes && \
+    apt-get install --yes --no-install-recommends \
+        celery \
+        python-celery-common \
+        git \
+        python3 \
+        python3-pip
+
+# Get the-engine code
+RUN cd /srv && git clone https://gitext.gfz-potsdam.de/dynamicexposure/the-engine/the-engine.git
+WORKDIR /srv/the-engine
+
+# Install the-engine with its dependencies
+RUN pip3 install -e .
+
+# Define place for instance's code
+VOLUME ["/srv/the-engine-instance"]
+
+# Cleanup
+RUN apt-get autoremove --yes $build_dependencies && apt-get autoremove --yes && \
+    apt-get clean --yes && rm -rf /var/lib/apt/* /var/cache/apt/* /root/.cache
+
+# Set up start script
+COPY ./files/start.sh /usr/local/bin
+CMD /usr/local/bin/start.sh

README.rst

@@ -3,7 +3,8 @@ Docker the-engine instance
 ==========================
 
 This is a Docker container instances of
-`the-engine <https://gitext.gfz-potsdam.de/dynamicexposure/the-engine/the-engine>`__.
+`the-engine <https://gitext.gfz-potsdam.de/dynamicexposure/the-engine/the-engine>`__
+providing a framework for running computation tasks with `celery <docs.celeryproject.org>`__.
 
 
 Copyright and copyleft

files/start.sh

+#!/bin/sh
+
+celery -A instance worker -n node -l info
+python3 /srv/the-engine-instance