diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 286bc31f7c5fb851ab62cd3796decb935f41b979..53eb2b77b7102cb8859c64e8f8a79e81ce76a1d3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -153,6 +153,10 @@ test-flatdeb-builder:
     entrypoint: [ "" ]
   script:
     - cd flatdeb-builder/
+    - cat suites/default.yaml.tpl | sed
+        -e "s|%MIRROR%|${MIRROR}|g"
+        -e "s|%DISTRO%|${DISTRO}|g"
+        | tee "suites/${RELEASE}.yaml"
     - /opt/apertis-flatdeb/run.py --build-area=$(pwd)/flatdeb-builddir --ostree-repo=$(pwd)/flatdeb-builddir/ostree-repo --suite=${RELEASE} --arch=amd64 base
 
 publish-base-docker-image:
diff --git a/flatdeb-builder/suites/v2022dev0.yaml b/flatdeb-builder/suites/default.yaml.tpl
similarity index 64%
rename from flatdeb-builder/suites/v2022dev0.yaml
rename to flatdeb-builder/suites/default.yaml.tpl
index 92e8937bf0f31f1dffcd4396b107b35bfdc18f25..743cb777b78470920376601cf0d075a0b5f28e03 100644
--- a/flatdeb-builder/suites/v2022dev0.yaml
+++ b/flatdeb-builder/suites/default.yaml.tpl
@@ -3,8 +3,8 @@ can_merge_usr: true
 has_automatic_dbgsym: true
 strip_source_version_suffix: bv20\d\d.*b\d+|b\w\d+
 sources:
-  - label: apertis-target
-    apt_uri: 'https://repositories.apertis.org/apertis/'
+  - label: %DISTRO%-target
+    apt_uri: '%MIRROR%'
     apt_components:
       - target
 ...