[feature] Consolidate docker images

[J4gQBqqR]

Hi, I saw that there are three different images for the piped: piped-frontend, piped-proxy, piped.
These images are reasonable to separate from micro-service point of view and have some technical advantages such as easier version maintenance for different moving parts.
In the user's point of view, the docker-compose file complicates the deployment and maintenance for server admin. I am just wondering is it a good ideas that these services can be consolidated into a "All in One" style image? I totally understand if this is not preferred. In that case, please close this ticket.

Thank you for your work.