No error handeling in env.sh if openssl is not installed

[FestHesten]

Lacking error handeling
A clean fedora 41 workstation install does not have openssl installed.

As the env.sh script assumes this is available and does not check you will get the error message:

Generating new service key and signing secret...
./env.sh: line 60: openssl: command not found
./env.sh: line 61: openssl: command not found
Generating a Fernet encryption key for the database...
Creating new .env from .env.example...

To Reproduce
Install clean Fedora-Workstation-Live-x86_64-41-1.4.iso.
Follow Docker Compose
Notice when running script you will get error message command not found.

Expected behavior
A clear error message and canceled creation of the .env file.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment (please complete the following information):

• OS: Fedora Workstation 41 x86.