feat: support deep base URLs

Dockerfile.tomcat

@@ -17,14 +17,13 @@ RUN apt-get update && \
         && \
     rm -rf /var/lib/apt/lists/*
 
-COPY docker-entrypoint.sh /entrypoint.sh
+COPY docker-entrypoint.tomcat.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh
 
-ENV BASE_URL=ROOT \
-    WEBAPP_PATH=$CATALINA_HOME/webapps
+ENV WEBAPP_PATH=$CATALINA_HOME/webapps
 RUN rm -rf $WEBAPP_PATH && \
     mkdir -p $WEBAPP_PATH
-COPY --from=builder /app/target/plantuml.war $WEBAPP_PATH/ROOT.war
+COPY --from=builder /app/target/plantuml.war /plantuml.war
 
 ENTRYPOINT ["/entrypoint.sh"]
 CMD ["catalina.sh", "run"]