mfsbsd for 15.1-RELEASE, certifcate ssl(middleman)

Dear FreeBSD users,

Anyone have any news if there will be a mfsbsd for 15.1-RELEASE ?

https://mfsbsd.vx.sk/

Its latest is 14.2.  It was a great way to install freebsd with just a
cd with ZFS.
I know we can use the amd64 iso, but is kind of big.
Thanks for taking a look.

I have two computers running 14.4-RELEASE, and decided not to upgrade
to 15.0 and 15.1 because I was afraid to bork them.  I had trouble
with one machine and I had to erase everything and start again.

Also, at work I have to install a workaround to access the internet.
A certificate is needed because websites are blocked.  On Fedora linux
one
does
-----
1. Convert the Certificate

Windows certificates are often in DER binary format or P7B (PKCS#7)
bundle. Convert them to PEM using openssl.

For a DER-encoded certificate (.cer/.der):

openssl x509 -inform DER -in certificate.cer -out certificate.pem
sudo cp certificate.pem /etc/pki/ca-trust/source/anchors/
sudo update-ca-trust
grep -i "subject" /etc/pki/tls/certs/ca-bundle.crt
-----
Something like this.  Someone on the list helped me with it but cannot
load the message because of certifcate issues :(

How does one do the same with FreeBSD?
Idiot proof way of doing this?

Best Regards,


Antonio