Replace run.sh with ansible-playbook

I've learned more about Ansible, and that the flags I set by using
`run.sh` are also settable with a `ansible.cfg` file! That's about the
same amount of overhead, but enables everything else to be more
standard. Neat!

README.md

@@ -17,9 +17,9 @@ just use them as idempotent command-line scripts!)
   service running Forgejo's official Linux binary. This is mostly a 1:1 port
   of [Forgejo's "Installation from binary" guide][fj-install]!
 
-You can run them individually, or all at once, with `run.sh`:
+You can run them individually, or all at once, with `ansible-playbook`:
 
-    run.sh setup-all.yml
+    ansible-playbook setup-all.yml
 
 If you're interested in setting up your own Forgejo service, this could be
 useful as a starting point, there's not much custom here! Just a couple things

ansible.cfg

@@ -0,0 +1,5 @@
+[defaults]
+inventory = inventory.cfg
+
+[privilege_escalation]
+become_ask_pass = True

run.sh

@@ -1 +0,0 @@
-ansible-playbook -i inventory.cfg --ask-become-pass $1