update bake-action to v6

.github/workflows/.test.yml

@@ -40,12 +40,6 @@ jobs:
       tags: ${{ steps.set.outputs.tags }}
       includes: ${{ steps.set.outputs.includes }}
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v4
-      -
-        name: Expose GitHub Runtime
-        uses: crazy-max/ghaction-github-runtime@v3
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -89,7 +83,7 @@ jobs:
             });
       -
         name: Build
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: integration-tests-base
           set: |
@@ -155,7 +149,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Build test image
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: integration-tests
           set: |

.github/workflows/buildkit.yml

@@ -152,11 +152,6 @@ jobs:
       # required to check out the repository
       contents: read
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -166,7 +161,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Run
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: govulncheck
         env:

.github/workflows/test-os.yml

@@ -39,9 +39,6 @@ jobs:
         run: |
           platform=${{ matrix.platform }}
           echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
-      -
-        name: Checkout
-        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -51,7 +48,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Build
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           provenance: false
           targets: binaries-for-test
@@ -240,9 +237,6 @@ jobs:
           - linux/amd64
           - linux/arm64
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v4
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -255,7 +249,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Build
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: integration-tests-base
           set: |

.github/workflows/validate.yml

@@ -23,16 +23,17 @@ jobs:
   prepare:
     runs-on: ubuntu-24.04
     outputs:
-      targets: ${{ steps.targets.outputs.matrix }}
+      targets: ${{ steps.generate.outputs.targets }}
     steps:
       -
         name: Checkout
         uses: actions/checkout@v4
       -
-        name: Matrix
-        id: targets
-        run: |
-          echo "matrix=$(docker buildx bake validate --print | jq -cr '.target | keys')" >> $GITHUB_OUTPUT
+        name: List targets
+        id: generate
+        uses: docker/bake-action/subaction/list-targets@v6
+        with:
+          target: validate
 
   validate:
     runs-on: ubuntu-24.04
@@ -49,9 +50,6 @@ jobs:
           if [ "$GITHUB_REPOSITORY" = "moby/buildkit" ]; then
             echo "GOLANGCI_LINT_MULTIPLATFORM=1" >> $GITHUB_ENV
           fi
-      -
-        name: Checkout
-        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -61,16 +59,13 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Validate
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: ${{ matrix.target }}
 
   archutil-arm64:
     runs-on: ubuntu-24.04
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v4
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -83,7 +78,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Validate
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: validate-archutil
           set: |

docker-bake.hcl

@@ -268,6 +268,7 @@ target "validate-dockerfile" {
     ]
   }
   name = "validate-dockerfile-${md5(dockerfile)}"
+  inherits = ["_common"]
   dockerfile = dockerfile
   call = "check"
 }