Tomcat Container
From Dogtag
Contents
Pulling Tomcat Image
$ docker pull tomcat
Running Tomcat Container
To run Tomcat container:
$ docker run \ --name tomcat \ --rm \ -p 8080:8080 \ tomcat
To access the container:
$ docker exec -ti tomcat bash
Deployment
To install JAR file:
$ docker cp <JAR file> tomcat:/usr/local/tomcat/lib
To install WAR file:
$ docker cp <WAR file> tomcat:/usr/local/tomcat/webapps/<context>.war
OpenShift
To deploy Tomcat on OpenShift:
$ oc new-app tomcat
To expose Tomcat with a default hostname:
$ oc expose svc/tomcat
To expose Tomcat with a proper hostname:
$ oc expose svc/tomcat --name server.example.com --hostname server.example.com
Then create a CNAME record:
server.example.com. IN CNAME <default hostname>.
Building Tomcat Image
Create the following Dockerfile:
FROM fedora:30
EXPOSE 8080
RUN dnf install -y tomcat && dnf clean all
USER tomcat
ENTRYPOINT [ \
"/usr/lib/jvm/jre/bin/java", \
"-Djavax.sql.DataSource.Factory=org.apache.commons.dbcp.BasicDataSourceFactory", \
"-classpath", \
"/usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar:/usr/lib/java/commons-daemon.jar", \
"-Dcatalina.base=/usr/share/tomcat", \
"-Dcatalina.home=/usr/share/tomcat", \
"-Djava.endorsed.dirs=", \
"-Djava.io.tmpdir=/var/cache/tomcat/temp", \
"-Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties", \
"-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager", \
"org.apache.catalina.startup.Bootstrap", \
"start" \
]
To build the image:
$ docker build -t tomcat .
To create the container:
$ docker run \
--name tomcat \
--tmpfs /tmp \
--tmpfs /run \
--publish 8080:8080 \
tomcat
