This PR adds `config-demo.toml` to `Dockerfile` which uses the db host
`demo-db`. This is more suited for demo setups. For normal docker installations
the db host is changed back to `db` which is a better sane default.
Reworded `INSTALL.md` and `README.md` for more clarity on docker
installation and configuration.
- Fix version injection in build
- Refactor Makefile
- Add --new-config flag to generate sample config
- Add license
- Remove autogenerated frontend README
- Refactor make dist to do end-to-end build
- Refactor build and add goreleaser conf