Docker build + release artifacts (.bin)

[j0uni]

I made dockerized build for this. It is located at my fork + branch https://github.com/j0uni/web888-firmware

If wanted I can make pull request out of this.

(also now the website seem to have problems, here is the release firmware .bin: https://github.com/j0uni/web888-firmware/releases/tag/v1.0.5%2Bdocker)

[fonic471]

Thank you!