Fix hub image build 

Fix overoptimized builds: libjs, kiesel, quanta Targeting native arch on GitHub runners produces binaries that crash with SIGILL on my hardware. Target generic ARMv8 and AVX2 CPUs instead.

Fix build 

Fixes 

jscript: use ~/.cache/jsz-jscript dir, fix stdbuf warning 

Fix/improve hub.Dockerfile Simple 'git pull' should be enough to update repo inside the container.

Bump revisions 

Misc fixes, bump revs 

hub fix 

Tidy up hub image