cert-issuer docker images build error and problem

I’m using rapsberrypi 3 with armv7l raspbian system to install the docker and blockcerts software.

  1. when it comes to “docker build -t bc/cert-issuer:1.0 .”, it generates an error, Standard_init_linux.go:207: exec user process caused “exec format error“.
  2. I also tried another method using “docker build -t bc/cert-issuer:1.0 -f Dockerfile.web .”, which can not finish even taking hours. the problem is the system can not work when compiling code. I got the same results after trying multiple times. meanwhile, what the difference between two build method?

Please help provice advice how to resolve the errors.
Many thanks

I’ve replied on github: https://github.com/blockchain-certificates/cert-issuer/issues/125