# Usage Instructions - Admin Username: manager - The image uses Java 17. # Apache Tomcat Apache Tomcat® software is an open-source implementation of Java Servlet, JavaServer Pages, Java Expression Language, and Java WebSocket technologies. The Java Servlet, JavaServer Pages, Java Expression Language, and Java WebSocket specifications are developed under the [Java Community Process](https://jcp.org/en/introduction/overview). Apache Tomcat software is developed in an open and participatory environment and is released under the [Apache License, Version 2](https://www.apache.org/licenses/). The Apache Tomcat project aims to be a collaboration of the best developers from around the world. We invite you to participate in this open development project. To learn more, [click here](https://tomcat.apache.org/getinvolved.html) or continue reading. Apache Tomcat software powers many large, mission-critical web applications across various industries and organizations. Some of these users and their stories are listed on the [PoweredBy wiki page](https://cwiki.apache.org/confluence/display/TOMCAT/PoweredBy). Apache Tomcat, Tomcat, Apache, the Apache feather, and the Apache Tomcat project logo are trademarks of the Apache Software Foundation.