[CI] use the docker label instead of ubuntu-latest

.forgejo/workflows/compliance.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   lint-backend:
-    runs-on: ubuntu-latest
+    runs-on: docker
     steps:
       - uses: https://code.forgejo.org/actions/checkout@v3
       - uses: https://code.forgejo.org/actions/setup-go@v4
@@ -21,7 +21,7 @@ jobs:
         env:
           TAGS: bindata sqlite sqlite_unlock_notify
   checks-backend:
-    runs-on: ubuntu-latest
+    runs-on: docker
     steps:
       - uses: https://code.forgejo.org/actions/checkout@v3
       - uses: https://code.forgejo.org/actions/setup-go@v4

.forgejo/workflows/testing-mysql.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   test-mysql:
-    runs-on: ubuntu-latest
+    runs-on: docker
     container:
       image: codeberg.org/forgejo/test_env:main
     services:

.forgejo/workflows/testing-psql.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   test-pgsql:
-    runs-on: ubuntu-latest
+    runs-on: docker
     container:
       image: codeberg.org/forgejo/test_env:main
     services:

.forgejo/workflows/testing-sqlite.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   test-sqlite:
-    runs-on: ubuntu-latest
+    runs-on: docker
     container:
       image: codeberg.org/forgejo/test_env:main
     steps:

.forgejo/workflows/testing-unit.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   test-unit:
-    runs-on: ubuntu-latest
+    runs-on: docker
     container:
       image: codeberg.org/forgejo/test_env:main
     steps: