Regroup necessary directories creation

Dockerfile.alpine

@@ -6,9 +6,8 @@ VOLUME /config
 
 RUN echo "@testing http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories \
     && apk --no-cache add dockerize@testing dumb-init openvpn shadow transmission-daemon \
-    && mkdir -p /opt/transmission-ui \
+    && mkdir -p /opt/transmission-ui/combustion-release /opt/transmission-ui/kettu \
     && wget -qO- https://github.com/Secretmapper/combustion/archive/release.tar.gz | tar xz -C /opt/transmission-ui \
-    && mkdir -p /opt/transmission-ui/kettu \
     && wget -qO- https://github.com/endor/kettu/archive/master.tar.gz | tar xz -C /opt/transmission-ui/kettu \
     && rm -rf /tmp/* /var/tmp/* \
     && groupmod -g 1000 users \