Since the removal of `build.sh`, we don't include any information about
the revision Dendrite was build from. Since go1.18, the revision a
binary was build from is automatically included, so we can try to get
that instead.
This also adds a `dendrite_up` metric showing the current version
(`dendrite_up{version="0.13.1+c796f20"} 1`)
Closes#2993
* Initial Docker Hub test
* Change upstream from for now
* Working polylith setup and build tools
* Some readme and other bits
* Remove the readme for now
* Add readme, rename a couple of things
* COPY instead of ADD
* Simplify component builds
* Fix the docker-compose things
* Build the base image again
* Update readme, add .dockerignore
* Indentation
* Whitespace
* Update images-push.sh
* Update images-push.sh
Till
Neil Alexander