[Dockerfile] Added INCLUDE_POSTGRESQL build argument, so one may build it with PostgreSQL support (#77)

Author: frol

Dockerfile

@@ -7,11 +7,19 @@ COPY "./app/requirements.txt" "./app/"
 COPY "./config.py" "./"
 COPY "./tasks" "./tasks"
 
+ARG INCLUDE_POSTGRESQL=false
 ARG INCLUDE_UWSGI=false
 RUN apk add --no-cache --virtual=.build_dependencies musl-dev gcc python3-dev libffi-dev linux-headers && \
     cd /opt/www && \
     pip install -r tasks/requirements.txt && \
     invoke app.dependencies.install && \
+    ( \
+        if [ "$INCLUDE_POSTGRESQL" = 'true' ]; then \
+            apk add --no-cache libpq && \
+            apk add --no-cache --virtual=.build_dependencies postgresql-dev && \
+            pip install psycopg2 ; \
+        fi \
+    ) && \
     ( if [ "$INCLUDE_UWSGI" = 'true' ]; then pip install uwsgi ; fi ) && \
     rm -rf ~/.cache/pip && \
     apk del .build_dependencies