Update README or prod docker image for db initialization

[grimwm]

There is a missing step in the README.md for bringing up confighub docker images from Docker Hub: people need to build the confighub db manager and use it to init their db before trying to bring up the docker image and connect to it. This is the "quick solution".

The "better solution" is to have the docker image pull the code, build it, and init the db by itself the first time the confighub docker image comes up.

The "best solution" is to integrate the db manager code into the confighub code. Then the db manager and CH code can be worked upon and built in lock-step, and images can be deployed with all the necessary tools more reasily.

[guy-frontegg]

@grimwm could you please provide a code in how to do so for those of us not familiar with Java

[gslongo]

Same questoon

@grimwm could you please provide a code in how to do so for those of us not familiar with Java

Same question here. Can you help ? :-)

[gslongo]

I found the (current) way to do it:

wget https://github.com/ConfigHubPub/Database-Manager/releases/download/v1.9/ConfigHubDBManager-1.9.jar
java -jar ConfigHubDBManager-1.9.jar -r jdbc:mysql://dbmysql:3306/ConfigHub -u root -p SecretPassword  -t mysql

Then restart the container