Is there a chat forum where people trying to implement open source version can ask questions in case they hit road blocks?
There is a community slack, see How can we join grafana slack community?.
Stack Overflow is one of the largest communities for developers and software engineers. You can ask specific technical questions related to deployment, Docker, web servers, Dash, or any other development-related topics. Just make sure to use relevant tags like dash, docker, deployment, etc., to reach the right audience.