updated docker build instructions

build-d4science.sh

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+#!/usr/bin/env bash
+if [ $# -eq 0 ]
+  then
+    tag='latest'
+  else
+    tag=$1
+fi
+
+docker build -t nubisware/nubisware-conductor-worker-py-d4s:$tag -f docker/d4science/Dockerfile .
+docker push nubisware/nubisware-conductor-worker-py-d4s:$tag

docker/d4science/Dockerfile

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+FROM python:3.7
+COPY ./docker/d4science/requirements.txt /app/
+RUN pip install -r /app/requirements.txt
+COPY conductor/ /app/conductor
+COPY pyexecplugins/ /app/pyexecplugins
+COPY ./docker/d4science/requirements.txt PyExec.py ./docker/d4science/config.cfg ./docker/d4science/entrypoint.sh /app/
+WORKDIR /app
+ENTRYPOINT ["/app/entrypoint.sh"]

docker/d4science/config.cfg

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+[common]
+loglevel = info 
+threads = 1 
+pollrate = 1
+
+[pymail]
+server = smtp-relay.d4science.org
+protocol = starttls
+port = 587

docker/d4science/entrypoint.sh

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+#!/bin/bash
+
+export HEALTH=${CONDUCTOR_HEALTH:-http://conductor-server:8080/health}
+
+echo 'Waiting for Conductor at ' $HEALTH '...'
+
+while [[ "$(curl -s -o /dev/null -L -w ''%{http_code}'' $HEALTH)" != 200 ]]; do
+    echo 'still waiting ...'
+    sleep 5
+done
+
+echo 'Starting default workers with $worker_plugins ...'
+
+python3 PyExec.py $worker_plugins 

docker/d4science/requirements.txt

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+requests >= 2.19.1
+