Install cmake from the official distribution

ubuntu_client/Dockerfile

@@ -35,8 +35,7 @@ RUN apt-get install -y git gdebi-core libcurl4 \
 						#less has a foreign repo check it laterable
 						nano parallel fort77 gcc gfortran-8 gdb g++ perl \
 						libacl1-dev bzip2 automake autoconf libtool wget curl davix \
-						cadaver
-
+						cadaver cmake
 
 RUN curl -sL http://storage-ci.web.cern.ch/storage-ci/storageci.key | apt-key add - && apt-get update
 
@@ -48,11 +47,6 @@ RUN echo "deb http://storage-ci.web.cern.ch/storage-ci/debian/xrootd bionic mast
 
 RUN add-apt-repository 'deb http://storage-ci.web.cern.ch/storage-ci/debian/xrootd bionic master '
 
-
-RUN wget https://cmake.org/files/v3.11/cmake-3.11.4.tar.gz
-RUN tar -xf cmake-3.11.4.tar.gz
-RUN cd ./cmake-3.11.4 && ./bootstrap && make && make install
-
 RUN apt-get clean
 RUN apt-get update
 RUN apt-get install -y eos-client eos-fusex xrootd-client-dbgsym xrootd-client-devel-dbgsym \