Update Dockerfile-alpine and losen 'packaging' version

Signed-off-by: David Dashyan <mail@davie.li>

Dockerfile-alpine

@@ -4,12 +4,12 @@ RUN mkdir -p /usr/src/app
 COPY . /usr/src/app/
 WORKDIR /usr/src/app
 RUN apk --update add sudo \
-    && apk --update add python3 openssl ca-certificates git\
+    && apk --update add python3 py-pip openssl ca-certificates git\
     && apk --update add --virtual build-dependencies python3-dev \
         libffi-dev openssl-dev build-base \
     && apk add --no-cache libstdc++ \
     && pip3 install --upgrade pip cffi \
-    && pip install -e .[dev] \
+    && pip install -e . \
     && apk del build-dependencies \
     && rm -f /var/cache/apk/*
 # When developing with Python in a docker container, we are using PYTHONBUFFERED

setup.py

@@ -80,7 +80,7 @@ install_requires = [
     'gunicorn==20.0.4',
     'jsonschema==3.2.0',
     'logstats==0.3.0',
-    'packaging==20.0.0',
+    'packaging>=20.0.0',  # Dockerfile-alpine required for pkg has ver 20.0.4
     # TODO Consider not installing the db drivers, or putting them in extras.
     'pymongo==3.7.2',
     'python-rapidjson==0.9.1',