Update 'mopidy/Dockerfile'

Create the /var/lib/mopidy/.config  directory and move the chown until after file has been copied

mopidy/Dockerfile

@@ -33,10 +33,12 @@ RUN apt-get purge --auto-remove -y \
        gcc \
        && apt-get clean \
        && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* ~/.cache \
-       && chown mopidy:audio -R /var/lib/mopidy/.config
+       && mkdir -p /var/lib/mopidy/.config 
 
 COPY mopidy.conf /var/lib/mopidy/.config/mopidy/mopidy.conf
 
+RUN chown mopidy:audio -R /var/lib/mopidy/.config  
+  
 USER mopidy
 
 VOLUME /var/lib/mopidy