Some updates proposed to your repository

Containerfile

@@ -0,0 +1,12 @@
+FROM quay.io/centos/centos:stream9
+
+LABEL maintainer="emverdes@gmail.com"
+
+RUN dnf install -y java-11-openjdk tomcat && \
+    dnf install iproute && \
+    dnf clean all
+
+ADD sample.war /var/lib/tomcat/webapps/
+
+EXPOSE 8080
+CMD ["/usr/libexec/tomcat/server", "start"]

README.md

@@ -1,13 +1,49 @@
 # docker-tomcat-tutorial
-A basic tutorial on running a web app on Tomcat using Docker
+A basic tutorial on running a web app on Tomcat using Podman (based on a docker tutorial)
 
 # Steps
-* Install [Docker](https://docs.docker.com/install/).
-* Clone this repository - $git clone https://github.com/softwareyoga/docker-tomcat-tutorial.git
-* cd 'docker-tomcat-tutorial'
-* $docker build -t mywebapp .
-* $docker run -p 80:8080 mywebapp
-* http://localhost:80
+* Install [podman](https://podman.io/getting-started/installation).
+* Clone this repository  
+```
+$ git clone https://github.com/emverdes/docker-tomcat-tutorial.git
+
+$ cd docker-tomcat-tutorial
+```
+* Verify Tomcat download URL from https://dlcdn.apache.org/tomcat/ to update the Containerfile
+```
+$ podman build -t tomcat-demo:1 .
+
+$ podman run -p 8008:8080 --name demo1 tomcat-demo:1
+```
+* In your browser go to http://localhost:8008
+* Run another instance for load balancing
+``` 
+$ podman run -p 8009:8080 --name demo1 tomcat-demo:1
+```
+# Simple apache reverse proxy
+Add to a VirtualHost in your apache web server configuration.
+Replace localhost with the hostname of the host running your containers.
+Remember to open up the ports in your firewall if needed.
+
+```
+ProxyPass "/sample"  "http://localhost:8008/sample"
+ProxyPassReverse "/sample"  "http://localhost:8008/sample"
+```
+
+# Apache proxy loadbalancer for 2 containers
+```
+<Proxy "balancer://mycluster">
+    BalancerMember "http://localhost:8008/sample"
+    BalancerMember "http://localhost:8009/sample"
+</Proxy>
+ProxyPass        "/" "balancer://mycluster/"
+ProxyPassReverse "/" "balancer://mycluster/"
+```
+
+# For reverse proxy
+* #setsebool -P httpd_can_network_connect on
+* #setsebool -P httpd_can_network_relay on
+
 
 # Links
 [Sample Tomcat web app](https://tomcat.apache.org/tomcat-8.0-doc/appdev/sample/)