ci: Reference image directly for forks

Otherwise forks will not find the image and things fall apart (due to
the method of how we build the image).

.gitlab-ci.yml

@@ -10,6 +10,7 @@ variables:
   FDO_DISTRIBUTION_TAG: latest
   FDO_DISTRIBUTION_VERSION: rawhide
   FDO_UPSTREAM_REPO: "libfprint/$CI_PROJECT_NAME"
+  FEDORA_IMAGE: "$CI_REGISTRY/libfprint/$CI_PROJECT_NAME/fedora/$FDO_DISTRIBUTION_VERSION:$FDO_DISTRIBUTION_TAG"
   BUNDLE: "org.freedesktop.libfprint.Demo.flatpak"
   LAST_ABI_BREAK: "056ea541ddc97f5806cffbd99a12dc87e4da3546"
 
@@ -19,6 +20,8 @@ stages:
   - test
   - flatpak
 
+image: $FEDORA_IMAGE
+
 .build_one_driver_template: &build_one_driver
   script:
     # Build with a driver that doesn't need imaging, or nss
@@ -39,7 +42,6 @@ stages:
 
 build:
   stage: build
-  extends: .fdo.distribution-image@fedora
   except:
     variables:
       - $CI_PIPELINE_SOURCE == "schedule"
@@ -57,7 +59,6 @@ build:
 
 test:
   stage: test
-  extends: .fdo.distribution-image@fedora
   except:
     variables:
       - $CI_PIPELINE_SOURCE == "schedule"
@@ -78,7 +79,6 @@ test:
 
 test_valgrind:
   stage: test
-  extends: .fdo.distribution-image@fedora
   except:
     variables:
       - $CI_PIPELINE_SOURCE == "schedule"
@@ -97,7 +97,6 @@ test_valgrind:
 
 test_scan_build:
   stage: test
-  extends: .fdo.distribution-image@fedora
   except:
     variables:
       - $CI_PIPELINE_SOURCE == "schedule"
@@ -113,7 +112,6 @@ test_scan_build:
 
 test_indent:
   stage: check-source
-  extends: .fdo.distribution-image@fedora
   except:
     variables:
       - $CI_PIPELINE_SOURCE == "schedule"
@@ -124,7 +122,6 @@ test_indent:
 
 test_unsupported_list:
   stage: check-source
-  extends: .fdo.distribution-image@fedora
   except:
     variables:
       - $CI_PIPELINE_SOURCE == "schedule"