Fix Dockerfile template copy rules and uwsgi app.ini logging output

Dockerfile

@@ -13,7 +13,8 @@ WORKDIR /app
 
 # copy every content from the local file to the image
 COPY ./app.py /app
-COPY ./templates/index.html /app/templates/index.html
+COPY ./templates/ /app/templates/
+RUN mkdir -p /app/log
 COPY ./static/ /app/static/
 RUN ls -la /app/static/*
 COPY ./app.ini /app

app.ini

@@ -1,6 +1,6 @@
 [uwsgi]
 wsgi-file = wsgi.py
-master = 5
+master = true
+processes = 4
 http = :90
 die-on-term = true
-logto = /app/log/marmelade.log