Release pipeline for multiarch binaries and an image (#432) * add release binaries * test * Test builds * Install protobuff * Install protobuff for mac and windows * use sudo * workaround windows warning * typo * typo2 * github vars at their best * remove RUSTFLAGS * remove windows instead * mint release * undebug * more docs; build binary for an image * Containerfile and joint pipeline to build-publish it * debug workspace * debug workspace 2 * debug workspace 3 * undebug, add dependabot * expose more ports * edit README; remove old CI * edit github context variables * fix COPY * fix COPY chown * fix GLIBCXX error * optimize Containerfile * don't cache the release * Update README.md