fix: pass LARVATAGGER_IMAGE_TAG build arg (2)

.gitlab-ci.yml

@@ -113,7 +113,7 @@ build larvatagger backend:
   variables:
     IMAGE_NAME: "larvatagger"
     IMAGE_TAG: "0.20.1-bigfat"
-    BUILD_CONTEXT: "--build-arg LARVATAGGER_IMAGE_TAG=$IMAGE_TAG back"
+    BUILD_CONTEXT: "--build-arg LARVATAGGER_IMAGE_TAG=0.20.1-bigfat back"
     CONTAINERFILE: "back/Containerfile.larvatagger"
   rules:
     - if: ($CI_COMMIT_BRANCH == "dev" &&