Fix for the Dockerfile-admin

Now the build works as expected on different Linux distributions

Author: OpenPj

Dockerfile-admin

@@ -8,11 +8,11 @@ USER root
 
 RUN useradd -c "Alfresco APS" -M -s "/bin/bash" -u "${USERID}" -o "${USERNAME}"
 
-COPY --chown=${USERNAME} jdbc-driver/*.* $TOMCAT_DIR/lib
+COPY --chown=${USERNAME} jdbc-driver/*.* $TOMCAT_DIR/lib/
 COPY --chown=${USERNAME} extensions/activiti-admin.war $TOMCAT_DIR/webapps
 COPY --chown=${USERNAME} properties/activiti-admin.properties $TOMCAT_DIR/lib
 COPY --chown=${USERNAME} admin/tomcat/conf/server.xml $TOMCAT_DIR/conf
 
 RUN chown ${USERNAME}:${USERNAME} -R ${TOMCAT_DIR}
 
-USER ${USERNAME}
+USER ${USERNAME}