.github/workflows: Migrate workflows to Blacksmith runners

.github/workflows/.test.yml

@@ -36,7 +36,7 @@ env:
 
 jobs:
   prepare:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     outputs:
       pkgs: ${{ steps.set.outputs.pkgs }}
       kinds: ${{ steps.set.outputs.kinds }}
@@ -102,7 +102,7 @@ jobs:
             *.cache-to=type=gha,scope=${{ inputs.cache_scope }},repository=${{ github.repository }},ghtoken=${{ github.token }}
 
   run:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     needs:
       - prepare
     env:

.github/workflows/buildkit.yml

@@ -33,7 +33,7 @@ env:
 
 jobs:
   prepare:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     outputs:
       binaries-platforms: ${{ steps.platforms.outputs.matrix }}
     steps:
@@ -66,7 +66,7 @@ jobs:
       sign: ${{ github.event_name != 'pull_request' }}
 
   binaries-finalize:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     needs:
       - binaries
     steps:
@@ -139,7 +139,7 @@ jobs:
       codecov_token: ${{ secrets.CODECOV_TOKEN }}
 
   govulncheck:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     permissions:
       contents: read # same as global permission
       security-events: write # required to write sarif report
@@ -166,7 +166,7 @@ jobs:
           sarif_file: ${{ env.DESTDIR }}/govulncheck.out
 
   image-prepare:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     outputs:
       includes: ${{ steps.set.outputs.includes }}
     steps:
@@ -288,7 +288,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
   scout:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     if: ${{ github.ref == 'refs/heads/master' && github.repository == 'moby/buildkit' }}
     permissions:
       # same as global permission
@@ -332,7 +332,7 @@ jobs:
           sarif_file: ${{ steps.scout.outputs.result-file }}
 
   release:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     permissions:
       # required to create GitHub release
       contents: write

.github/workflows/buildx-image.yml

@@ -36,7 +36,7 @@ env:
 
 jobs:
   create:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     strategy:
       fail-fast: false
       matrix:

.github/workflows/create-patched-release.yml

@@ -22,7 +22,7 @@ permissions:
 
 jobs:
   create-release:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4

.github/workflows/dockerd.yml

@@ -19,7 +19,7 @@ env:
 
 jobs:
   prepare:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     steps:
       -
         name: Prepare
@@ -76,7 +76,7 @@ jobs:
           retention-days: 1
 
   test:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     needs:
       - prepare
     strategy:

.github/workflows/frontend.yml

@@ -42,7 +42,7 @@ jobs:
       codecov_token: ${{ secrets.CODECOV_TOKEN }}
 
   prepare:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     outputs:
       includes: ${{ steps.set.outputs.includes }}
       tag: ${{ steps.set.outputs.tag }}
@@ -188,7 +188,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
   scout:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     if: ${{ github.repository == 'moby/buildkit' && github.ref == 'refs/heads/master' }}
     permissions:
       # same as global permission
@@ -232,7 +232,7 @@ jobs:
           sarif_file: ${{ steps.scout.outputs.result-file }}
 
   release:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     if: startsWith(github.ref, 'refs/tags/dockerfile')
     permissions:
       # required to create GitHub release

.github/workflows/labeler.yml

@@ -15,7 +15,7 @@ jobs:
     permissions:
       contents: read
       pull-requests: write
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     steps:
       -
         name: Run

.github/workflows/test-os.yml

@@ -29,7 +29,7 @@ env:
 
 jobs:
   build:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     strategy:
       fail-fast: false
       matrix:
@@ -82,7 +82,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-2022]
+        os: [blacksmith-4vcpu-windows-2025]
         worker:
           - containerd
         pkg:
@@ -107,7 +107,7 @@ jobs:
           - ./frontend/dockerfile#11-12
           - ./frontend/dockerfile#12-12
         include:
-          - os: windows-2022
+          - os: blacksmith-4vcpu-windows-2025
             worker: containerd
             pkg: ./...
             skip-integration-tests: 1
@@ -193,7 +193,7 @@ jobs:
           retention-days: 1
 
   test-freebsd-amd64:
-    runs-on: ubuntu-22.04
+    runs-on: blacksmith-4vcpu-ubuntu-2204
     needs:
       - build
     env:

.github/workflows/validate.yml

@@ -24,7 +24,7 @@ env:
 
 jobs:
   prepare:
-    runs-on: ubuntu-24.04
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     outputs:
       includes: ${{ steps.matrix.outputs.includes }}
     steps: