Add local pip cache to avoid repeating downloads

.drone.yml

@@ -28,7 +28,7 @@ pipeline:
       - cd /var/www/stage/maidstone-hackspace-website
       - git pull
       - docker-compose -fstage.yml build
-      - docker-compose -fstage.yml down
+      - docker-compose -fstage.yml down --remove-orphans 
       - docker-compose -fstage.yml up -d
 
   publish-live:

compose/django/Dockerfile

@@ -5,7 +5,7 @@ ENV PYTHONUNBUFFERED 1
 # Requirements have to be pulled and installed here, otherwise caching won't work
 COPY ./requirements /requirements
 
-RUN pip install -r /requirements/production.txt \
+RUN pip install --cache-dir ./cache/pip -r /requirements/production.txt \
     && groupadd -r django \
     && useradd -r -g django django
 

compose/django/Dockerfile-dev

@@ -4,7 +4,7 @@ ENV PYTHONUNBUFFERED 1
 
 # Requirements have to be pulled and installed here, otherwise caching won't work
 COPY ./requirements /requirements
-RUN pip install -r /requirements/local.txt
+RUN pip install --cache-dir ./cache/pip -r /requirements/local.txt
 
 COPY ./compose/django/entrypoint.sh /entrypoint.sh
 RUN sed -i 's/\r//' /entrypoint.sh