Organizing contributing

docs/dev_setup/Container.md

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+### Container based development flow (recommended and the easiest)
+
+All you need is to 
+
+1. Install [Docker Engine 20.11+](https://docs.docker.com/engine/install/) on your local machine
+2. Run `pnpm dev:container`. 
+
+It will build the base image for Coolify and start the development server inside Docker. 
+
+All required ports (3000, 3001) will be exposed to your host.