ci: update bake-action to v6

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

.github/workflows/build.yml

@@ -126,8 +126,9 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Build test image
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
+          source: .
           targets: integration-test
           set: |
             *.output=type=docker,name=${{ env.TEST_IMAGE_ID }}
@@ -299,9 +300,6 @@ jobs:
       # required to write sarif report
       security-events: write
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -311,7 +309,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Run
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: govulncheck
         env:
@@ -391,9 +389,6 @@ jobs:
       - test-unit
     if: ${{ github.event_name != 'pull_request' && github.repository == 'docker/buildx' }}
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v4
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -425,11 +420,11 @@ jobs:
           password: ${{ secrets.DOCKERPUBLICBOT_WRITE_PAT }}
       -
         name: Build and push image
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           files: |
             ./docker-bake.hcl
-            ${{ steps.meta.outputs.bake-file }}
+            cwd://${{ steps.meta.outputs.bake-file }}
           targets: image-cross
           push: ${{ github.event_name != 'pull_request' }}
           sbom: true
@@ -448,9 +443,6 @@ jobs:
     needs:
       - bin-image
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v4
       -
         name: Login to DockerHub
         uses: docker/login-action@v3

.github/workflows/docs-release.yml

@@ -56,7 +56,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Generate yaml
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           source: ${{ github.server_url }}/${{ github.repository }}.git#${{ env.RELEASE_NAME }}
           targets: update-docs

.github/workflows/docs-upstream.yml

@@ -37,9 +37,6 @@ jobs:
   docs-yaml:
     runs-on: ubuntu-24.04
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -49,7 +46,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Build reference YAML docs
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: update-docs
           provenance: false

.github/workflows/e2e.yml

@@ -35,8 +35,6 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -46,7 +44,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Build
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: binaries
           set: |

.github/workflows/validate.yml

@@ -94,9 +94,6 @@ jobs:
           if [ "$GITHUB_REPOSITORY" = "docker/buildx" ]; 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
@@ -106,7 +103,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Validate
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           targets: ${{ matrix.target }}
           set: |