Sometimes during development we want to use domain names instead of IP addresses and ports, proper domain certificates instead of self-signed to make local environment similar to production, etc.. This problem can be solved with any reverse proxy and magic domain names like traefik.me, nip.io, sslip.io, etc..

Recently, I’ve developed Android app that during the development requires access to the backend service that is run in the docker behind reverse-proxy with custom myservice.traefik.me domain name. For sure, from emulator you can get access to your local service when connect to it by IP address with specified port. But this approach leads to some issues and ugly workarounds in a code. There are several solutions to this problem like edit hosts file, run own DNS server etc.

In this article we are going to focus on how to connect our application to the Cosmos DB Emulator from Docker. This article is continuation of the Part 1 of this series. I suggest to read it first before continue, because this part is based on previous one. Add Docker support to our application Before we continue we need to add Docker support to our application we created in Part 1 of this article.

Recently I’ve tried to use official Cosmos DB Emulator on docker , but quickly encountered some issues that I’ll try to address in this article. Following documentation I’ve managed to run emulator on Docker with no problem, but issues start appearing when I’ve tied to connect my application to it. Basically, I’ve had application that also running on Docker, but unfortunately documentation does not cover this scenario. So, to figure our how to make it work I’ve decided to run my application without Docker, just to make sure that everything is working, but again there were some small issues.