Remove resolver from stack command, which is overwritten by config file

Author: sbmueller

Dockerfile

@@ -154,7 +154,7 @@ USER dockerdev
 
 RUN \
   if [ "$(ls /tmp)" ]; then ls /tmp; false; fi \
-  && stack install --resolver lts-10.10 sbp \
+  && stack install sbp \
   && rm -rf /tmp/*
 
 CMD ["make", "all"]