Update tumbleweed.docker

dockerfiles/tumbleweed.docker

@@ -27,7 +27,6 @@ RUN zypper refresh && \
     zypper install -y python3-pytest && \
     zypper install -y python3-Mako && \
     zypper install -y perl-JSON && \
-    zypper install -y diffutils && \
     zypper install -y mbedtls-devel libopenssl-devel && \
     zypper install -y rpcbind libtirpc-devel && \
     zypper install -y libyajl-devel libyajl-devel-static && \
@@ -44,6 +43,9 @@ RUN zypper refresh && \
     pip3 install --break-system-packages meson && \
     ln -sfn `find /usr/bin/clang-format-14*` /usr/bin/clang-format-14     # Fix to provide clang-format-14. In tumbleweed only the variant with full version name is available
 
+#    zypper install -y diffutils && \  ----> probably now redundant, conflicts with busybox-diffutils
+
+
 #    git config --system http.proxy http://xfelproxy.desy.de:3128 && \
 #    git config --system https.proxy http://xfelproxy.desy.de:3128