This problem was Resolved

OS: Ubuntu 14.02.
Installed: Bitcoin Core in Regtest mode and Cert-Tools.

After i run command: docker build -t bc/cert-issuer:1.0 .

I see it maked file: /etc/cert-issuer/conf.ini and another file -> Successfully built.
But it not work. I dont see any file here.
Run : sed -i.bak “s//$issuer/g” /etc/cert-issuer/conf.ini
Error: /etc/cert-issuer/conf.ini : No such file or directory

Please help me!