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Starting with docker containers



Just starting with docker and would like to get some help with my first task.

I have docker 5:18.09.1~3-0~ubuntu-bionic installed on Ubuntu 18.04.1.

I have a java web application running on tomcat web server using port 8080. The app is accessing a local Postgres db. The application needs to run on the virtual server as a docker container using openjdk docker image matching the required Java version.

Any help or how to start is greatly appreciated

Thank you