Load environment variables in container. So the python-dotenv module is no longer needed!

Dockerfile

-# pull official base image
-FROM python:3.6.9
+FROM python:3.6-alpine
 
-# set environment varibles
-ENV PYTHONDONTWRITEBYTECODE 1
-ENV PYTHONUNBUFFERED 1
 
-# set work directory
-WORKDIR /opaque
+RUN apk add build-base
 
-# Copy the current directory contents into the container at /daemon
-COPY . /opaque
 
-# Install requirements
-RUN pip install --trusted-host pypi.python.org -r requirements.txt
+RUN adduser -D opaque
+USER opaque
 
-# set permissions for entrypoint
-RUN chmod a+x flask-entrypoint.sh
+
+WORKDIR /home/opaque
+
+
+COPY app app
+COPY migrations migrations
+COPY opaque.py config.py ./
+COPY requirements.txt requirements.txt
+
+
+RUN python -m venv venv && \
+    venv/bin/pip install -r requirements.txt
+
+
+COPY docker-entrypoint.sh /usr/local/bin/
+
+
+EXPOSE 5000
+
+
+ENTRYPOINT ["docker-entrypoint.sh"]

docker-entrypoint.sh

+#!/bin/bash
+
+# If no argument is given, start Opaque
+if [ $# -eq 0 ]
+then
+  venv/bin/python opaque.py
+else
+  if [[ $1 == "--create-db" ]]
+  then
+    flask db init
+    flask db upgrade
+  fi
+fi

flask-entrypoint.sh

-#!/bin/bash -x
-
-python opaque.py

opaque.py

 import eventlet
 eventlet.monkey_patch()
-from dotenv import load_dotenv
-load_dotenv()
 from app import create_app, db, socketio
 from app.models import Corpus, User, Role, Permission, Job
 from flask_migrate import Migrate

requirements.txt

@@ -8,5 +8,4 @@ Flask-SQLAlchemy
 Flask-Table
 Flask-WTF
 jsonpatch
-python-dotenv
 redis