Supported tags and respective
For more information about this image and its history, please see the relevant manifest file (
library/tomcat). This image is updated via pull requests to the
docker-library/official-images GitHub repo.
For detailed information about the virtual/transfer sizes and individual layers of each of the above supported tags, please see the
repos/tomcat/tag-details.md file in the
docker-library/repo-info GitHub repo.
What is Tomcat?
Apache Tomcat (or simply Tomcat) is an open source web server and servlet container developed by the Apache Software Foundation (ASF). Tomcat implements the Java Servlet and the JavaServer Pages (JSP) specifications from Oracle, and provides a "pure Java" HTTP web server environment for Java code to run in. In the simplest config Tomcat runs in a single operating system process. The process runs a Java virtual machine (JVM). Every single HTTP request from a browser to Tomcat is processed in the Tomcat process in a separate thread.
Logo © Apache Software Fountation
How to use this image.
Run the default Tomcat server (
CMD ["catalina.sh", "run"]):
$ docker run -it --rm tomcat:8.0
You can test it by visiting
http://container-ip:8080 in a browser or, if you need access outside the host, on port 8888:
$ docker run -it --rm -p 8888:8080 tomcat:8.0
You can then go to
http://host-ip:8888 in a browser.
The default Tomcat environment in the image for versions 7 and 8 is:
CATALINA_BASE: /usr/local/tomcat CATALINA_HOME: /usr/local/tomcat CATALINA_TMPDIR: /usr/local/tomcat/temp JRE_HOME: /usr CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
The default Tomcat environment in the image for version 6 is:
CATALINA_BASE: /usr/local/tomcat CATALINA_HOME: /usr/local/tomcat CATALINA_TMPDIR: /usr/local/tomcat/temp JRE_HOME: /usr CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar
The configuration files are available in
/usr/local/tomcat/conf/. By default, no user is included in the "manager-gui" role required to operate the "/manager/html" web application. If you wish to use this app, you must define such a user in
tomcat images come in many flavors, each designed for a specific use case.
This is the defacto image. If you are unsure about what your needs are, you probably want to use this one. It is designed to be used both as a throw away container (mount your source code and start the container to start your app), as well as the base to build other images off of.
This image is based on the popular Alpine Linux project, available in the
alpine official image. Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general.
This variant is highly recommended when final image size being as small as possible is desired. The main caveat to note is that it does use musl libc instead of glibc and friends, so certain software might run into issues depending on the depth of their libc requirements. However, most software doesn't have an issue with this, so this variant is usually a very safe choice. See this Hacker News comment thread for more discussion of the issues that might arise and some pro/con comparisons of using Alpine-based images.
To minimize image size, it's uncommon for additional related tools (such as
bash) to be included in Alpine-based images. Using this image as a base, add the things you need in your own Dockerfile (see the
alpine image description for examples of how to install packages if you are unfamiliar).
View license information for the software contained in this image.
Supported Docker versions
This image is officially supported on Docker version 17.03.0-ce.
Support for older versions (down to 1.6) is provided on a best-effort basis.
Please see the Docker installation documentation for details on how to upgrade your Docker daemon.
If you have any problems with or questions about this image, please contact us through a GitHub issue. If the issue is related to a CVE, please check for a
cve-tracker issue on the
official-images repository first.
You can also reach many of the official image maintainers via the
#docker-library IRC channel on Freenode.
You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can.
Before you start to code, we recommend discussing your plans through a GitHub issue, especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing.
Documentation for this image is stored in the
tomcat/ directory of the
docker-library/docs GitHub repo. Be sure to familiarize yourself with the repository's
README.md file before attempting a pull request.
Hey everyone. Newcomer here. I'm trying to override the tomcat-user.xml file and restart the container after that. I tried mounting a volume to map a local folder to "/user/local/tomcat/conf", but I end up erasing all config files, thus causing the container to fail it's restart. Anyone found a way to do that? Thanks!
@saint31337 your comment is misleading, because this is simply not the config which is included with the image.
You can find out the actual one with
docker run --rm tomcat cat conf/tomcat-users.xml, and realize there is no default user or password for security reasons.
Login and passwd for tomcat 8.0
<user username="tomcat" password="secret" roles="manager-gui,manager-script,manager-jmx,manager-status,admin-script,admin-gui"/>
@migyecla only the environment variables supported by catalina.sh can be used as-is: http://svn.apache.org/repos/asf/tomcat/tc8.5.x/trunk/bin/catalina.sh. For configuring Tomcat further you have you have to push your own configuration files. See also: http://stackoverflow.com/a/23957805/4716370
How can I set up Tomcat manager login? I set TOMCAT_USERNAME and TOMCAT_PASSWORD but cant login to Tomcat Manager :-(
Hi. I have pulled the latest tomcat and successfully deployed. I can reach tomcat server, but the problem is it is using 1.7 as JVM. But my application is running on 1.8. When I try to deploy, it gives an error. Is it possible to change it 1.8?
I cannot find the catalina.out log file anywhere
where I can find it?
It is working like a charm.
how to login tomcat image??
I run tomcat using docker image and i wanna connect running tomcat container.
I try to attach running tomcat container. because running it, i can't enter command.
Hi, I'm trying to link an app deployed in a tomcat-7 container to a mysql container.
mysql container: docker run --name my-docker-sql -p 34591:3306 -d mysql
tomcat container: docker run --name d-tomcat -it --rm link my-docker-sql:mysql -v ....-p 8889:8080 tomcat:7.0-jre7
in my app I set the following jdbc address:
Yet, the app fails to start with:
java.net.ConnectException: Connection refused (Connection refused)
java.sql.SQLException: Connections could not be acquired from the underlying database!
Any ideas on where am I going wrong here?