Java Web Application (WAR) deployed as root "/" context onto Customized Bitnami Tomcat 9

Pre-requisites

• Docker

Features

• Tomcat 9.0.34
• JDK 1.8.242-0
• WAR deployed as root context "/"
• Tomcat configuration files from /tomcat/conf override default configuration /opt/bitnami/tomcat/conf
  • server.xml
  • localhost.crt
  • localhost.key
• Port 8080 forwards to 8443
• Port 8443 configured with HTTP/2 protocol over TLS 1.2/1.3 using Apache APR and APR Tomcat Connector

How it's done

Java Web Application (WAR) deployed as Tomcat's root "/" context

• ROOT.war gets built
• autoDeploy and deployOnStartUp attributes of the tag <Host name="localhost" appBase="webapps".../> are set to "false"
• /tomcat/conf/server.xml overrides default server.xml
• defalut ROOT folder gets deleted
• ROOT.war gets copied to /opt/bitnami/tomcat/webapps

Base Docker image

• Customized Bitnami Tomcat 9.0.34 + JDK 1.8.242-0

Java Web Application

• Example Java Web Application (WAR)

bitnami-tomcat9-jdk18-root-war on DockerHub

• bitnami-tomcat9-jdk18-root-war on DockerHub

Run image

docker login
docker run --name t9 -d --rm -p 8080:8080 -p 8443:8443 andriykalashnykov/bitnami-tomcat9-jdk18-root-war:latest

Test image

docker exec -t t9 sh -c "cat /opt/bitnami/tomcat/conf/server.xml | grep 'custom config'"
docker exec -t t9 sh -c "cat /opt/bitnami/tomcat/conf/server.xml | grep 'TLSv1.3,TLSv1.2'"
docker exec -t t9 sh -c "cat /opt/bitnami/tomcat/logs/catalina.*.log | grep 'APR'"
docker exec -t t9 sh -c "cat /opt/bitnami/tomcat/conf/tomcat-users.xml | grep 'admin-script'"
docker exec -t t9 sh -c "curl http://localhost:8080/index.html"
docker exec -t t9 sh -c "curl -k https://localhost:8443/index.html"

Stop image

docker stop t9