https://omnitruck.chef.io/install.sh
It works with pure sh, not just bash. It works on Red Hat, Debian, Solaris, AIX, and macOS. It works even if curl and wget aren't installed.
https://github.com/chef/omnitruck
And I see their cheapest product is $16,500/year.
The script I wrote is intended for a clean and secure install of either Apache or nginx and PHP without a complex setup or the need for third-party options so it will work on any cloud host. Currently the one I published only supports Ubuntu but I'll add more OS's in the future.
That said, last year Chef changed their licensing[1]. My understanding is that their code is now all open source under Apache License 2.0 (there used to be a split between open source and commercial). But, and this is a big BUT, their distributions (installers, compiled code, etc.) are not open source. This is similar to Red Hat where all the main code in RHEL is open source, but they don't provide an ISO to install RHEL.
If you are looking for server configuration management, I've used all four of the major ones (Puppet, Chef, Salt, and Ansible), I'd recommend giving SaltStack[2][3] a look. The PyObjects renderer[4] is especially interesting because it allows writing the configuration in a full programming language (Python), similar to how Chef configuration is written in Ruby.
[1] https://www.chef.io/press-release/chef-open-sources-100-perc...
[2] https://www.saltstack.com/
[3] https://github.com/saltstack/salt
[4] https://docs.saltstack.com/en/master/ref/renderers/all/salt....