ci: buildkit integration test

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

.github/workflows/ci.yml

@@ -36,6 +36,9 @@ jobs:
         uses: docker/bake-action@v1
         with:
           targets: ${{ matrix.target }}
+          set: |
+            *.cache-from=type=gha,scope=build-${{ matrix.target }}
+            *.cache-to=type=gha,scope=build-${{ matrix.target }}
       -
         name: Upload build artifacts
         uses: actions/upload-artifact@v2
@@ -43,3 +46,72 @@ jobs:
           name: ${{ matrix.target }}
           path: ${{ env.BUNDLES_OUTPUT }}/${{ matrix.target }}-daemon/*
           if-no-files-found: error
+
+  test-buildkit:
+    needs:
+      - build
+    runs-on: ubuntu-20.04
+    strategy:
+      fail-fast: false
+      matrix:
+        pkg:
+          - ./client
+          - ./cmd/buildctl
+          - ./solver
+          - ./frontend
+          - ./frontend/dockerfile
+        typ:
+          - integration
+        include:
+          - pkg: ./...
+            skip-integration-tests: 1
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+        with:
+          path: moby
+      -
+        name: BuildKit ref
+        run: |
+          ./hack/go-mod-prepare.sh
+          echo "BUILDKIT_REF=$(./hack/buildkit-ref)" >> $GITHUB_ENV
+        working-directory: moby
+      -
+        name: Checkout BuildKit ${{ env.BUILDKIT_REF }}
+        uses: actions/checkout@v3
+        with:
+          repository: "moby/buildkit"
+          ref: ${{ env.BUILDKIT_REF }}
+          path: buildkit
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Download build artifacts
+        uses: actions/download-artifact@v2
+        with:
+          name: binary
+          path: ./buildkit/build/moby/
+      -
+        name: Update daemon.json
+        run: |
+          sudo rm /etc/docker/daemon.json
+          sudo service docker restart
+          docker version
+          docker info
+      -
+        name: Test
+        run: |
+          ./hack/test ${{ matrix.typ }}
+        env:
+          CONTEXT: "."
+          TEST_DOCKERD: "1"
+          TEST_DOCKERD_BINARY: "./build/moby/dockerd"
+          TESTPKGS: "${{ matrix.pkg }}"
+          TESTFLAGS: "-v --parallel=1 --timeout=30m --run=//worker=dockerd$"
+          SKIP_INTEGRATION_TESTS: "${{ matrix.skip-integration-tests }}"
+        working-directory: buildkit

hack/buildkit-ref

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+# This script returns the current BuildKit ref being used in moby.
+
+: "${BUILDKIT_REPO=moby/buildkit}"
+: "${BUILDKIT_REF=}"
+
+if [ -n "$BUILDKIT_REF" ]; then
+	echo "$BUILDKIT_REF"
+	exit 0
+fi
+
+# prepare go mod
+./hack/go-mod-prepare.sh
+
+# get buildkit version from vendor.mod
+BUILDKIT_REF=$(GO111MODULE=on go list -mod=mod -modfile=vendor.mod -u -m -f '{{.Version}}' "github.com/${BUILDKIT_REPO}")
+if [[ "${BUILDKIT_REF}" == *-*-* ]]; then
+	# if pseudo-version, figure out just the uncommon sha (https://github.com/golang/go/issues/34745)
+	BUILDKIT_REF=$(echo "${BUILDKIT_REF}" | awk -F"-" '{print $NF}' | awk 'BEGIN{FIELDWIDTHS="7"} {print $1}')
+	# use github api to return full sha to be able to use it as ref
+	BUILDKIT_REF=$(curl -s "https://api.github.com/repos/${BUILDKIT_REPO}/commits/${BUILDKIT_REF}" | jq -r .sha)
+fi
+
+echo "$BUILDKIT_REF"