diff --git a/Dockerfile.jetty b/Dockerfile.jetty
index f1d939c..ea5a034 100644
--- a/Dockerfile.jetty
+++ b/Dockerfile.jetty
@@ -21,4 +21,5 @@ USER jetty
 
 ENV GRAPHVIZ_DOT=/usr/bin/dot
 
-COPY --from=builder /app/target/plantuml.war /var/lib/jetty/webapps/ROOT.war
+ARG BASE_URL=ROOT
+COPY --from=builder /app/target/plantuml.war /var/lib/jetty/webapps/$BASE_URL.war
diff --git a/Dockerfile.tomcat b/Dockerfile.tomcat
index d0679ab..b4ffce9 100644
--- a/Dockerfile.tomcat
+++ b/Dockerfile.tomcat
@@ -17,5 +17,6 @@ RUN apt-get update && \
 
 ENV GRAPHVIZ_DOT=/usr/bin/dot
 
-RUN rm -rf /usr/local/tomcat/webapps/ROOT
-COPY --from=builder /app/target/plantuml.war /usr/local/tomcat/webapps/ROOT.war
+ARG BASE_URL=ROOT
+RUN rm -rf /usr/local/tomcat/webapps/$BASE_URL
+COPY --from=builder /app/target/plantuml.war /usr/local/tomcat/webapps/$BASE_URL.war