Revert "Revert "OpenConceptLab/ocl_issues#897 Run OCL API using gunicorn""

This reverts commit a7e9392.

Author: rkorytkowski

Dockerfile

@@ -1,12 +1,37 @@
-FROM python:3.8.3
+FROM python:3.9.6-alpine as builder
 ENV PYTHONUNBUFFERED 1
+ENV PYTHONDONTWRITEBYTECODE 1
 ARG SOURCE_COMMIT
+
+RUN apk update && apk upgrade && \
+    apk add --no-cache bash git gcc openssl-dev libffi-dev postgresql-dev python3-dev musl-dev cargo
+
+RUN pip install --upgrade pip
+
 RUN mkdir /code
-ADD requirements.txt /code/
 WORKDIR /code
-RUN pip install packaging
-RUN pip install -r requirements.txt
-ADD . /code/
+ADD requirements.txt /code/
+
+RUN pip wheel --no-cache-dir --wheel-dir /code/wheels -r requirements.txt
+
+FROM python:3.9.6-alpine
+
+RUN addgroup -S ocl && adduser -S ocl -G ocl
+
+ENV APP_HOME=/home/ocl/code
+
+RUN mkdir -p $APP_HOME
+WORKDIR $APP_HOME
+
+RUN apk update && apk add --no-cache libpq bash
+COPY --from=builder /code/wheels /wheels
+COPY --from=builder /code/requirements.txt .
+RUN pip install --no-cache /wheels/*
+RUN rm -rf /wheels
+
+ADD --chown=ocl:ocl . $APP_HOME
+
+USER ocl
 
 RUN chmod +x set_build_version.sh
 RUN ["bash", "-c", "./set_build_version.sh"]
@@ -17,4 +42,5 @@ RUN chmod +x start_celery_worker.sh
 RUN chmod +x ping_celery_worker.sh
 RUN chmod +x start_flower.sh
 EXPOSE 8000
+
 CMD ["bash", "-c", "./startup.sh"]

requirements.txt

@@ -1,5 +1,6 @@
 Django==3.1.12
 psycopg2==2.8.5
+gunicorn==20.1.0
 djangorestframework==3.11.2
 pylint==2.5.3
 pydash==4.8.0
@@ -17,7 +18,7 @@ celery[redis]==4.4.7
 celery_once==3.0.1
 flower==0.9.5
 redis==3.5.3
-kombu==4.5.0
+kombu==4.6.11
 django-elasticsearch-dsl==7.1.4
 drf-yasg==1.17.1
 git+https://github.com/snyaggarwal/django-queryset-csv

startup.sh

@@ -21,5 +21,10 @@ python manage.py import_lookup_values
 echo "Populating text from extras.about"
 python manage.py populate_text_from_extras_about
 
-echo "Starting up the server"
-python manage.py runserver 0.0.0.0:${API_PORT:-8000}
+if [[ "$ENVIRONMENT" = "development" ]]; then
+  echo "Starting up the development server"
+  python manage.py runserver 0.0.0.0:${API_PORT:-8000}
+else
+  echo "Starting up the production server"
+  gunicorn core.wsgi:application --bind 0.0.0.0:${API_PORT:-8000}
+fi