Bug#995708: docker.io: dockerd dies with Illegal Instruction when run on a pre-SSE2-class x86 system

[Jörn Heusipp]

I am by no means a Go expert, however given that docker is written in 
Go, and that Go increased the default i386 architecture requirements to 
SSE2 in 1.16 (see <https://golang.org/doc/go1.16#386>), building the 
docker package with GO386=softfloat on i386 might solve this issue. The 
set of x86 CPUs supporting SSE2 but not also supporting amd64 is quite 
small. Basically, only the Pentium 4. Thus to be useful on 32bit x86 
systems in general, I think wider compatibility, even at a performance 
cost, could be considered.

Thanks,
Jörn