ci: fix image

.gitea/workflows/check.yml

@@ -6,11 +6,9 @@ name: check
 on: [push, pull_request]
 jobs:
   check:
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [linux-base]
-    runs-on: ${{ matrix.os }}
+    runs-on: linux-base
+    container:
+      image: git.scient.ing/infra/linux-base:26.10.7
     steps:
       - uses: actions/checkout@v4
       - name: Check the repository

.gitea/workflows/site.yml

@@ -19,6 +19,8 @@ env:
 jobs:
   site:
     runs-on: linux-base
+    container:
+      image: git.scient.ing/infra/linux-base:26.10.7
     timeout-minutes: 15
     steps:
       - uses: actions/checkout@v4