actually call caddyfile script

caddy.py

@@ -0,0 +1,18 @@
+from operator import itemgetter
+from textwrap import dedent
+from deploy import by_branch
+
+
+def build_caddyfile():
+    excluded = {"deployer"}
+    with open("Caddyfile", "w+") as file:
+        for domain, port in map(itemgetter("domain", "port"), by_branch.values()):
+            if domain in excluded:
+                continue
+
+            entry = f"""
+                {domain}.drm.dev {{
+                    reverse_proxy localhost:{port}
+                }}
+                """
+            file.write(dedent(entry))