diff --git a/Dockerfile.jetty b/Dockerfile.jetty
index 1a06a5b..f1d939c 100644
--- a/Dockerfile.jetty
+++ b/Dockerfile.jetty
@@ -21,5 +21,4 @@ USER jetty
 
 ENV GRAPHVIZ_DOT=/usr/bin/dot
 
-ARG BASE_URL=plantuml
-COPY --from=builder /app/target/plantuml.war /var/lib/jetty/webapps/$BASE_URL.war
+COPY --from=builder /app/target/plantuml.war /var/lib/jetty/webapps/ROOT.war
diff --git a/Dockerfile.tomcat b/Dockerfile.tomcat
index 9024999..d0679ab 100644
--- a/Dockerfile.tomcat
+++ b/Dockerfile.tomcat
@@ -17,6 +17,5 @@ RUN apt-get update && \
 
 ENV GRAPHVIZ_DOT=/usr/bin/dot
 
-ARG BASE_URL=plantuml
-RUN rm -rf /usr/local/tomcat/webapps/$BASE_URL
-COPY --from=builder /app/target/plantuml.war /usr/local/tomcat/webapps/$BASE_URL.war
+RUN rm -rf /usr/local/tomcat/webapps/ROOT
+COPY --from=builder /app/target/plantuml.war /usr/local/tomcat/webapps/ROOT.war