Clean up maven built

dockerfiles/Dockerfile.dspace

@@ -56,7 +56,8 @@ ENV LC_ALL=en_US.UTF-8
 ENV LANG=en_US.UTF-8
 ENV LANGUAGE=en_US.UTF-8
 
-
+### Install Tomcat
+#
 # build tomcat $TOMCAT_VERSION (> 8.0.35), version recommended by LINDAT
 RUN wget -O /tmp/apache-tomcat-$TOMCAT_VERSION.tar.gz \
         https://archive.apache.org/dist/tomcat/tomcat-8/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz && \
@@ -92,20 +93,20 @@ COPY commul-customization/tomcat-setenv.sh /opt/tomcat8/bin/
 COPY commul-customization/tomcat-server.xml /opt/tomcat8/conf/server.xml
 
 
-# install Dspace
+### Install Dspace
+#
 # pre-fetch maven dependencies
 RUN git clone --depth 1 --branch commul-custom https://github.com/commul/clarin-dspace.git /opt/repository/sources/dspace
 WORKDIR /opt/repository/sources/dspace
-RUN mvn compile
-#COPY commul-customization/dspace-pom.xml /tmp/pom.xml
-#WORKDIR /tmp/
-## RUN mvn dependency:resolve
-#RUN mvn -B -T 4 dependency:copy-dependencies dependency:resolve-plugins dependency:go-offline  clean
-# all files could be copied into a /tmp folder within the container first (maybe that could be mounted?); see also dspace-entrypoint.sh
-
+RUN mvn -B -T 1C \
+    --quiet \
+    --fail-never \
+    dependency:copy-dependencies dependency:resolve-plugins dependency:go-offline
+#
 # this checks if there was a new commit since the last build
 ADD https://api.github.com/repos/commul/clarin-dspace/git/refs/heads/commul-custom /tmp/version.json
 RUN git pull
+RUN mvn -B -T 1C clean compile
 
 WORKDIR /opt/repository/sources/dspace/utilities/project_helpers
 RUN ./setup.sh /opt/repository/workspace