fix(ci): skip build/deploy on the raw template repo itself (template-go-agent#3)

env.IMAGE: __PROJECT_NAME__ is only substituted with a real, lowercase
project name when a repo is *generated* from this template. On the
template repo itself it's still the literal placeholder, which
buildah/Docker reject outright ("repository name must be lowercase") --
build (and therefore deploy) can never succeed here no matter what else
changes. Gate both on github.repository != this template's own path so
the template's CI reads green on what it actually validates: the check
job (lint/vet/test), the thing every generated repo inherits.

.gitea/workflows/cd.yml

@@ -35,7 +35,14 @@ jobs:
     name: Build & Import
     needs: check
     runs-on: self-hosted
-    if: github.event_name != 'pull_request'
+    # __PROJECT_NAME__/__MODULE_PATH__ are placeholders substituted only when
+    # a repo is generated from this template -- on the raw template repo
+    # itself they're still literal, and `IMAGE: __PROJECT_NAME__` contains
+    # uppercase letters, which buildah/Docker rejects outright ("repository
+    # name must be lowercase"). Build/deploy can never succeed here; skip
+    # them on this repo so its own CI reads green on what it can actually
+    # validate (the check job).
+    if: github.event_name != 'pull_request' && github.repository != 'mathias/template-go-agent'
     outputs:
       image-tag: ${{ steps.meta.outputs.sha-tag }}
     steps: