.github/workflows: Migrate workflows to Blacksmith runners

.github/workflows/docker-launchql.yaml

@@ -29,7 +29,7 @@ jobs:
             runner: ubuntu-latest      # x86_64
           - platform: linux/arm64
             arch: arm64
-            runner: ubuntu-24.04-arm   # native arm
+            runner: blacksmith-4vcpu-ubuntu-2404-arm   # native arm
     runs-on: ${{ matrix.runner }}
 
     permissions:
@@ -44,8 +44,8 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+      - name: Setup Blacksmith Builder
+        uses: useblacksmith/setup-docker-builder@v1
 
       - name: Login to GHCR
         if: github.event_name != 'pull_request'
@@ -72,32 +72,28 @@ jobs:
       # do a quick amd64-only build without pushing.
       - name: Build (no push, PR only)
         if: github.event_name == 'pull_request' && matrix.platform == 'linux/amd64'
-        uses: docker/build-push-action@v5
+        uses: useblacksmith/build-push-action@v2
         with:
           context: .
           file: ./Dockerfile
           platforms: linux/amd64
           push: false
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
 
       # For non-PR events, build one architecture per runner
       # and push images by digest. These digests are later
       # assembled into a multi-arch manifest.
       - name: Build & push by digest
         if: github.event_name != 'pull_request'
         id: build
-        uses: docker/build-push-action@v6
+        uses: useblacksmith/build-push-action@v2
         with:
           context: .
           file: ./Dockerfile
           platforms: ${{ matrix.platform }}
           labels: ${{ steps.meta.outputs.labels }}
           outputs: type=image,name=${{ env.REPO }}/${{ env.IMAGE_NAME }},push-by-digest=true,push=true
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
 
       - name: Export digest
         if: github.event_name != 'pull_request'
@@ -118,7 +114,7 @@ jobs:
   # multi-arch manifest for each tag.
   publish-constructive-manifest:
     if: github.event_name != 'pull_request'
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     needs: build-push-constructive
 
     permissions:
@@ -130,8 +126,8 @@ jobs:
       IMAGE_NAME: constructive
 
     steps:
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+      - name: Setup Blacksmith Builder
+        uses: useblacksmith/setup-docker-builder@v1
 
       - name: Login to GHCR
         uses: docker/login-action@v3

.github/workflows/docker.yaml

@@ -41,7 +41,7 @@ concurrency:
 jobs:
   build-push:
     if: github.event_name != 'pull_request' || !github.event.pull_request.draft
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
 
     permissions:
       contents: read
@@ -67,8 +67,8 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+      - name: Setup Blacksmith Builder
+        uses: useblacksmith/setup-docker-builder@v1
 
       - name: Login to GHCR
         if: github.event_name != 'pull_request'

.github/workflows/run-tests.yaml

@@ -17,7 +17,7 @@ concurrency:
 
 jobs:
   constructive-tests:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2404
     container: pyramation/node-sqitch:20.12.0
 
     strategy: