Error while building Docker image

I tried to build the Docker image using the command "docker build --no-cache -t cytools .", but got the following error:

=> ERROR [27/30] RUN tar zxvf palp-2.20.tar.gz; rm palp-2.20.tar.gz; mv   0.4s------> [27/30] RUN tar zxvf palp-2.20.tar.gz; rm palp-2.20.tar.gz; mv palp-2.20 palp:#31 0.349 #31 0.349 gzip: stdin: not in gzip format#31 0.350 tar: Child returned status 1#31 0.350 tar: Error is not recoverable: exiting now#31 0.358 mv: cannot stat 'palp-2.20': No such file or directory------executor failed running [/bin/sh -c tar zxvf palp-2.20.tar.gz; rm palp-2.20.tar.gz; mv palp-2.20 palp]: exit code: 1

Can anyone tell if this is an issue with my system, or Docker, or the software?