How to add the certification to ubuntu trusted lis

1.     Copy your CA to dir /usr/local/share/ca-certificates/

2.     Use command:

sudo cp foo.crt /usr/local/share/ca-certificates/foo.crt

3.   Update the CA store:

sudo update-ca-certificates

To remove the list:

delete the file from /usr/local/share/ca-certificates

sudo update-ca-certificates --fresh