Questions about running the viewer

[sorcererstone]

My OS is Windows with HyperV disabled. I am running this integration example project on Windows via Vagrant and Virtual Box.
My questions are not about issues with OHIF but rather on how to access the viewer.
WRT ohif-pacs project. Here are my newbie questions:

Q1/ Judging from the yml file for this project, am I correct to say mongo db is used exclusively by OHIF (Because I believe dcm4chee is using Postgres SQL)?
Q2/ Can someone explain how does OHIF knows what Dicom studies are stored in dcm4chee?
Could it be every time a new Dicom studies is imported or pushed to dcm4chee, the same study is pushed to OHIF?
Q3/ How do I launch OHIF? What is the URL?
Please note: I saw the brief description in ohif-dcm4chee-secureUI project section, the author said to launch OHIF, I have to go to http://dockerhost. Where in that project config files that define the IP address for dockerhost?
Q4/ In the ohif-pacs project, there is a app.json file which looks almost identical to the app.json file in the ohif-dcm4chee-secureUI project except the latter also included the segments on proxy and Keycloak. So, if I want to deploy the Pacs in the ohif-dcm4chee-secureUI project, as well as the OHIF viewer, what should I do with these 2 app.json files from these 2 separated projects?
Or, I don’t need to run in parallel these 2 projects at all. Just the ohif-dcm4chee-secureUI project will do?

My goal is to build the dcm4chee, Orthanc and have OHIF viewer able to see the image depositories from both these Pacs. So, in this scenario, I think I should run the ohif-pacs project and the ohif-dcm4chee-secureUI project (bar the viewer part) concurrently? Or just the ohif-dcm4chee-secureUI project will do?
Also, what is the best method to point Orthanc to the images store in the OHIF that is part of this integration example project?

Thanks in advance.
Regards,
John

[dannyrb]

@sorcererstone, these integration examples are two years old. You may have better luck with the updated deployment docs here: https://docs.ohif.org/deployment/

We maintain a docker image for version 2+ of the OHIF Viewer (that is React based instead of Meteor).