Add host-gateway mapping for git.octoturge.com in every workspace container

install-skills.sh curls git.octoturge.com at workspace startup (coder_script)
to pull this repo's Agent Skills, but the workspace's public DNS answer for
that hostname NAT-hairpins back through the LAN and times out (curl: (28)
after ~147s). code.octoturge.com already has this exact host-gateway
workaround in every template's docker_container.workspace resource; add the
matching entry for git.octoturge.com.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YRq8ts9zwge8Rttbuku9FQ

templates/3d-printing/main.tf

@@ -204,6 +204,13 @@ resource "docker_container" "workspace" {
     host = "code.octoturge.com"
     ip   = "host-gateway"
   }
+  # install-skills.sh curls this at startup to pull the repo's Agent Skills;
+  # without this the workspace's public DNS answer for git.octoturge.com
+  # NAT-hairpins back to the LAN and times out (curl: (28)).
+  host {
+    host = "git.octoturge.com"
+    ip   = "host-gateway"
+  }
   volumes {
     container_path = "/home/coder"
     volume_name    = docker_volume.home_volume.name