Run Protobuild on GitHub Actions

containerd is planning to migrate off from github.com/gogo/protobuf
which will affect hcsshim.

Before that, this commit runs Protobuild in GitHub Actions to
make sure all generated files are reproducible from .proto files.

Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>

.github/workflows/ci.yml

@@ -8,6 +8,22 @@ env:
   GOPROXY: off
 
 jobs:
+  proto:
+    runs-on: 'windows-2019'
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '^1.15.0'
+
+      # TODO install protoc-gen-gogoctrd
+      - name: Run Protobuild
+        shell: bash
+        run: |
+          go install github.com/containerd/protobuild@7e5ee24bc1f70e9e289fef15e2631eb3491320bf
+          protobuild $(go list ./... | grep -v /vendor/)
+          git diff --exit-code
+
   lint:
     runs-on: 'windows-2019'
     steps:

Protobuild.toml

@@ -1,14 +1,10 @@
-version = "unstable"
+version = "1"
 generator = "gogoctrd"
 plugins = ["grpc", "fieldpath"]
 
 # Control protoc include paths. Below are usually some good defaults, but feel
 # free to try it without them if it works for your project.
 [includes]
-  # Include paths that will be added before all others. Typically, you want to
-  # treat the root of the project as an include, but this may not be necessary.
-  before = ["./protobuf"]
-
   # Paths that should be treated as include roots in relation to the vendor
   # directory. These will be calculated with the vendor directory nearest the
   # target package.