Improve docker build

- add .dockerignore
- add entrypoint.sh to ensure proper permissions in Docker volumes
- add TZ variable for consistent Celery timestamps

Dockerfile

@@ -51,22 +51,20 @@ ARG GVAAPP=gva
 ARG GVAGID=2000
 ARG GVAUID=2000
 
-VOLUME /srv/$GVAAPP/media /srv/$GVAAPP/static
-
-WORKDIR /srv/$GVAAPP
-
 RUN addgroup --gid $GVAGID $GVAAPP ; \
     adduser --home /home/$GVAAPP --shell /bin/bash --uid $GVAUID --gid $GVAGID --disabled-password \
             --gecos "User for gnuviechadmin component $GVAAPP" $GVAAPP
 
 COPY --chown=$GVAAPP:$GVAAPP --from=builder /srv/$GVAAPP/.venv /srv/$GVAAPP/.venv
 
-USER $GVAAPP
+WORKDIR /srv/$GVAAPP
 
-VOLUME /srv/$GVAAPP
+VOLUME /srv/$GVAAPP/media /srv/$GVAAPP/static
+
+VOLUME /srv/$GVAAPP/gnuviechadmin
 
 EXPOSE 8000
 
-COPY ${GVAAPP}.sh /srv/
+COPY ${GVAAPP}.sh entrypoint.sh /srv/
 
-ENTRYPOINT ["dumb-init", "/srv/${GVAAPP}.sh"]
+ENTRYPOINT ["dumb-init", "/srv/entrypoint.sh"]